I agree with spade22. You definitely need to stop and get it looked at. If anything talk to your partner and see if he is having any symptoms of some sort. That def. should not be happen. And any discharge you have can signify an infection and its not good. I would do just that and go to the health department and check it out.. Use condoms girl.. Especially if you are worried about what your parents will think. They will definitely find out someday if you have something.. You can't hind things like that forever. Your body is your temple and you need to take care of it. You by not using any protection and cont. are setting your self up... Please take care and get yourself checked out. Keep me posted. Thanks..
You DEFINITELY need to seek medical help for your condition. Bleeding after sex can signify an STD. The type of discharge you describe is not normal and could be anything from a mild infection, to a serious STD. There is also a possibility you are pregnant.
I suggest you go to planned parent hood for a checkup especially since you havent been using protection (if your partner has an STD, you will likely get it too). Also, why are you concerned about what your parents will think? By choosing to have unprotected sex you are setting yourself up for a pregnancy and possible STD - both of these conditions will be brought to your parents attention at some point.