I remember that when I first met him, everything was real 'tight'. As soon as he entered me, I would actually cry out with pleasure at the sensation. But these days his organ just seems to slip in far too easily. There are times when I am not sure whether he has entered me or not.

Don't get me wrong Doc, I love him very much. And he says he loves me. But to be honest with you, last year, I begin to feel that as he was not satisfying me, maybe I should 'try elsewhere'.

So I had a 'one-night stand' with a young guy. I thought that maybe everything would feel different with him. But it didn't. He actually told me that I was not tight enough for him, which was very distressing.

I regret what I did, but it has shown me that the problem lies with me. Is it because I have had several children? Or is there some other reason? I would do anything to put this problem right. I want to save my marriage.

A: I am sure that you will save your marriage. It does not sound as though your husband is threatening to leave you. And it is good that he says he loves you.

However, it is clear that you need to take steps to get your sex life back into shape. Why has it gone wrong?

The answer definitely lies in the fact that you have had several children. When a woman's vagina becomes 'too loose', this is invariably due to repeated childbirth.

Having a baby pass through the vagina does tend to stretch it. And if you have several children, then the widening is likely to be noticeable to a man.

There is an exception to this rule. If the mother has been taught pelvic floor exercises and has done them regularly for some months after childbirth, then it is likely that her vaginal muscles will remain in good condition. So her vagina should not loosen at all.

My advice to anyone who is about to have a baby is that she should get her midwife to teach her the pelvic floor exercises (PFEs)!

In your case, it is obvious that you must take urgent action. To begin with, I feel that you must start doing PFEs yourself.

Ideally, you should find a midwife, physiotherapist or nurse who can teach you. But let me briefly explain how.

The idea is to 'tighten' the muscles around the vagina by repeatedly contracting them. You can do them in any situation, and no one else will know, but you.

Begin by just 'twitching' your vaginal muscles, as though you were trying to stop yourself from urinating. Hold that big contraction for 10 seconds. Then relax for 10 seconds.

Repeat this alternate contraction and relaxation for 10 minutes. And - most importantly - repeat the entire process 10 times a day. Bear in mind that you need several months of these 'vaginal workouts' in order to achieve a good result.

But also, I strongly suggest that you see a gynaecologist. He will examine you, and assess the state of your vaginal muscles and the surrounding tissues. He may tell you that you need to do an operation - called a 'repair' - which will tighten everything up and improve your sex life.

In the meantime, you might also like to try a useful trick invented by a French gynaecologist. Buy yourself a very small vibrator - one which goes inside the vagina.

If you put it inside just before intercourse, and keep it there while your husband is having sex with you, you will find that both of you feel a sense of 'fullness'.

However, that is just a temporary measure, and I am sure that the long-term answer to your problems lies in consulting a gynaecologist. Good luck.

A: This is almost certainly a rupture, also known as a hernia.

These little bulges in the groin are very common, and almost always they need to be cured by taking a simple operation. Please see a surgeon-specialist as soon as possible.

A: Provided you have no other risk factors for heart disease - such as a high cholesterol - I see no reason why you should not go on the pill.

However, some doctors would feel that at 36, it might be better for you to go on the 'mini-pill', which is a much milder medication.

A: Well, in all the positions in which the man makes love to the woman from behind, it is very easy for him to reach around and create friction on the clitoral area with his fingertips. If you visit a book store, there are many books which give more details of positions in which manual stimulation of the clitoris is practicable.

A: No, it is not. This is called 'post-menopausal bleeding', and it can be a symptom of a serious disease of the womb.

So you must get yourself examined by a doctor this week.

A: It is almost certainly a 'polyp', which is like a little wart. It must be removed, so please see a doctor right away. It may be infectious, so avoid sex until it has been cured.