I'm 10 days late on my period.but every time I had sex I start to bleed. I took 2 pregnatcy test ( one from before my period started and one from when I was a week late ) I'm not sure what wrong with me.

I would go to the doctor asap it could be many things but I believe they will have to do some smear tests to find the problem they can give you a blood test to check your hcg levels but definitely go to your local gp