Irregular Menstrual Cyle Issue

hi! I am 15 years old, and I just had sex for the first time 2 days ago(Saturday). It was protected, but I am nervous that I may have gotten pregnant from the guys pre-ejaculatory fluid, before he put protection on. Today, (Monday) I had bleeding, which felt like, and I assumed was my period, but I didn't expect it until way later on this month. Is this normal/ does it varify that I am not pregnant for cetain? please help![/b]

Hi,
Sometimes you bleed when the fertilized egg latches itself into the uterus.
At least that's what I have read and experienced. Some people confuse this bleeding to regular period and not test for pregnancy. Later they found out they are actually pregnant. I would suggest you test for pregnancy ASAP. Please take care of yourself and your education.
Since you are still a child, I hope all goes well with you.
Bye.