Hi, what if you have only had sex once before - is this more of an issue? I have had the same problem, kind of, first time with this new guy and I start bleeding like im on my period after a pretty painful entry. But the next morning I realise it's not a period as its only from the entrance...freaked out a little and it's really uncomfortable.
Thank you that does help some.
a cause for the bleeding could be tearing of the vessels in the vaginal canal. they are small and fragile a lot like the little ones in your nose, think how easily you can get a bloody nose. if you've had sex before not once before but "routinely" with out issues, it could be you are coming up on " that time of the month" during your cycle your body retains water and swells including your vaginal canal, meaning it gets tighter making it more likely that your beau who fits comfortably all month is now just snug enough to tear some vessels. hope that helps.