Okay, so about 2 and a half weeks ago I had a lot of unprotected sex in a night, and I'm pretty sure there was no pullout method used. That night I noticed a very small amount of blood when I used the washroom. About 4 or 5 days later I got my period but it was a weird one, it was there for a few days, then went away for a day, then came back for another 2 days. It was also very, very early, I had already gotten my period once that month, I wasn't supposed to get it again for another 2 and a half weeks. Should I worry about taking a pregnancy test ? Or did getting my perios mean I'm in the clear ?

You might have had implantation bleeding, so yes, you could be pregnant. Try taking a test a few days after when your period would be normally.

Pull-out isn't birth control, as a lot of sperm are contained in pre-ejaculate. If you're not pregnant now, ask your doctor about more reliable methods of birth control. You should also probably be tested for STDs if you and your partner haven't both been previously tested.