[Brandye]

The only thing in the vagina he could be hitting would be your cervix. Generally, as we become aroused our vaginas balloon and limit the chance of this happening. All of us have it occur once in a while and it can be a surprise. Not usually damaging and is more common when you are not especially aroused.

The other possibility is that, through layers of tissue, he is actually hitting an ovary. This pain can be excruciating. It is exactly the female analogy to a man being kicked in the balls.

Whichever, you and your partner need to discuss what is happening and what you will each do to avoid this. Else you will become fearful of sex.

G-Spot stimulation is a rather sophisticated technique that too many people talk about without the faintest idea of what they are doing. There are stickies on this topic. Read them in Sexual Health: Women and the other woman's forum.