I need help!

So my bf and I had unprotected sex on April.12 and almost 2 weeks after we did, I for sure got my period. It was heavy like always and I know for a fact it was my period and not implantation bleeding. However, it was from April 29th to May 5th. Every since my last (hopefully period), had ended, I have not got my period yet and I am freaking out. I am very and always irregular so it's normal that I may skip a month or start late or early sometimes and I don't really have any early pregnecy symptions, but if anyone could help me and give me some advice and answers, that would be very much appreciated. I'm so scared! I don't feel ready for a baby!):