Hi. I hope someone can help me. We had protected sex on the 2nd Feb then we had sex again without a condom and he kept pulling out to see if there's some semen going out (still the same day) and on the 6th Feb we had sex again but this time we didn't use any protection and used the withdrawal method. I got scared and a little paranoid because I was due on the 16th Feb but I got my period 3 days before I was due (13th of Feb). Is this normal? I have an irregular cycle (30 days) but when I counted the days it's only 28. I'm really worried because I don't know if this normal or not. Please help me.