Re: why does my girlfriend bleed when she's on top but not on her period?
This happens to me sometimes too. It is usually light and goes away after a few hours. For me, I feel like it is because when I am on top there tends to be more friction and rubbing which could irritate the skin and I suppose occasionally cause a minor tear in the skin. Nothing to worry about.
Although if the bleeding is heavy and this happens frequently I would definitely suggest she see her doc.