Coming' isn't that easy, if you're a woman. Nearly all men can climax without difficulty, but women just aren't built that way. Unfortunately, not everyone knows this all-important fact – even in 2015.
This is partly because books, films and – most of all – internet porn paint a picture in which today's females are hot and raring to go, and in an almost constant state of sexual ecstasy.
This inaccurate portrayal can lead to today's teens and 20-somethings believing that there's something wrong with them if they can't climax to order. The truth, however, is that most of them are absolutely normal.
Interestingly, only a generation ago many doctors believed that a high proportion of the female population simply couldn't climax at all.
Why did they think this way? Simply because most of them had had little or no training in sexual medicine.
Also, the majority of them were so embarrassed about sex themselves that they tried to avoid discussing it with their patients.
Furthermore, since women don't need to climax in order to conceive, most doctors didn't rate the importance of the female orgasm very highly.
This may seem obvious, but many women, even today, feel inhibited about self-love and can't help feeling that it isn't something they should be doing.
But masturbating helps you to learn exactly which pressures and rhythms you need in order to bring you to orgasm. So, it can be really useful.
Once you have learned to climax easily on your own, you can then show your partner exactly what you need in order to make you come.
Of course, this may feel embarrassing at first. But the first step in fulfilment with a partner is to communicate your feelings to him or her and also to communicate how you like your body to be touched.
When you can't find the words, use caresses. But also try to build up a vocabulary with your partner that's easy to use. A lot of couples find their sex lives fail simply because they don't have the right language. And saying: 'Could you rub my ...er ...er?' isn't specific enough to be helpful.
Some women, incidentally, find achieving orgasm much easier with the help of a vibrator. And nowadays there are several excellent online mail order businesses, run by women for women, which sell good quality sex aids that really work.
They also sell lingerie, erotic literature and lubrication. They are equally helpful to gay and heterosexual women.
Three of the best of these businesses are:
By the time you're in your 30s, 40s or 50s: you should be able to reach orgasm quite easily – provided that you have a loving, understanding partner.
But do remember that most women find that their ability to climax varies according to what part of their menstrual cycle they're in.
It's quite common for a woman to feel especially orgasmic half-way through her cycle. But some women feel particularly turned-on just before a period. Others notice that they don't really feel like sex at all during some times of the month. All of this is normal.
But if you're still not having any orgasms at all, or if you're still having enormous difficulty 'getting there' – you may want to seek some help from an experienced sex therapist.
Our article 'Who to contact for sex therapy' will help you to find the right person.
Various types of orgasm
Thanks to Freud, the father of psycho-analysis, people used to believe that vaginal orgasms were what mature women had, while clitoral orgasms were what immature women had.
Experts no longer believe this. And many of today's sex experts, as well as ordinary women, say that they really don't know the difference between a vaginal orgasm and a clitoral one.
The majority of women need clitoral stimulation in order to climax. This applies whether they're enjoying loveplay or intercourse.
Some women, on the other hand, believe they can 'come' through intercourse with no manual stimulation of the clitoris and claim that it's the vagina itself that sparks off the orgasm.
But many sex experts think that what's happening during intercourse is the clitoris is being stimulated by being pulled down or being rubbed by part of the man's torso.
There's also the G-spot to consider.
Some women experience a particularly intense orgasm when that part of their anatomy is stimulated (you can find the G-spot inside you, on the front vaginal wall).
Indeed, many women who enjoy having their G-spots touched claim that they ejaculate during these intense orgasms.
So, there may be a case for saying that there's a G-spot orgasm – as well as possibly a vaginal one and one that originates in the clitoris.
Difficulty with climaxing
Our feeling about all of this is that it really doesn't matter whether or not there are different types of orgasms.
The important thing is that you should be having good, reliable orgasms whenever you want them – and you should be enjoying them.
A lot of women write to us complaining that they can't reach simultaneous orgasm with their partners.
But in fact, simultaneous orgasm is quite uncommon. Surveys done by the Medical Information Service and others have found that most women rarely climax at exactly the same time as their partners.
However, it's certainly nice when this happens.
And it can be achieved – if the man has good control of his own orgasm and if he's skilled at using his fingers during intercourse – to bring the woman to a climax just at the same moment as he comes.
Or indeed, if she chooses to use her own fingers to stimulate herself, so that they climax together.
Until quite recent years, doctors believed that only a tiny minority of women could have multiple orgasms.
But research by the Medical Information Service and others has shown that in fact, the majority of females can have a series of climaxes, one after the other if, that is, they're happy and relaxed in the relationship and if the partner is willing to stimulate them to 'come' again and again.
Please note that the ability to have multiple orgasms seems to increase with age. It's unusual at the age of 20, but many women in their 40s, 50s and 60s can do it.
Orgasms in mid-life
As we have already said, a woman's ability to climax tends to improve with age.
But we know that some women get well into mid-life before they manage to have an orgasm. But the important thing is that you should never regard it as 'too late'.
Time and again we have heard of women who have learned to orgasm when they were in their 40s, 50s – and even later.
My girlfriend can't orgasm
In 2009, at the Royal Society of Medicine, Danish psychosexual therapist Pia Struck presented the results of a study she had made of 500 women.
These women all had long histories of difficulties with orgasm and 25 per cent of them had never climaxed. Their ages ranged from 18 to 88.
They were treated by use of group therapy, where they were encouraged to think more positively about their genitals and to learn acceptance of their sexuality through touch. They also embarked on practical sex-therapy by using clitoral vibrators.
Of these women: 465 (93 per cent) had an orgasm that was witnessed by a therapist. And it was reported that the post-menopausal women among them were just as able to achieve orgasm as the younger participants in the study. So, clearly, you are never too old to become orgasmic.
There can of course be other problems in midlife, around the time of the menopause. Most of these difficulties occur because of all the hormonal changes going on in the body. And it's extremely common for women to 'go off' sex temporarily – simply because it becomes too dry and uncomfortable.
Fortunately, there are all sorts of ways to remedy this nowadays. There are good over-the-counter lubricants, such as Wet, Liquid Silk, Yes Organic and K-Y Jelly. These are all suitable, by the way, for any age of woman.
How can men help?
Remember that most women need stimulation of the clitoris. This is the part of them that would have turned into a penis, had they developed as males – and it's just as important to women as the penis is to a man.
Remember that love, romance, cuddling and a good atmosphere turn women on in the early stages of a sex session – just as much as your caresses do.
Take your time.
Caress her breasts – a few women learn to climax through breast fondling alone.
Give her oral sex. Most women adore this and some claim that they cannot come unless a man 'goes down' on them.
Don't be too proud to ask her to show you what she wants.
Don't hesitate to use a vibrator, if she likes the idea. The new 'tongue vibrators' may be helpful.
Have some sex sessions, where you encourage her to take the initiative and to decide the agenda.
If you lose control and come before her, do try to summon some energy to kiss and stimulate her, so that she can climax too.
Do tell her that she's marvellous, sexy and beautiful.
Having an orgasm is a lovely feeling. You're entitled to it.
But it's not easy to do if you're uptight, tired, stressed or unhappy in your relationship.
If in doubt, seek help from an expert advisor.