I had unprotected sex with my boyfriend almost 2 1/2 weeks ago. He says that he pulled out but I heard about pre-, and I had given him a blow job before we had sex. We also had sex 4 times that day. 2 days later I took the pill Plan B. about a week later I was feeling extremely tired, sick, etc. so I took a pregnancy test this morning and it was negative. But I also started bleeding yesterday, I'm not sure if it my period or implantation bleeding.
Can anyone help me?

When should you get / have gotten your period?

I'm not exactly sure... my periods aren't regular.

I had unprotected sex with my boyfriend almost 2 1/2 weeks ago. He says that he pulled out but i heard about pre-, and i had given him a blow job before we had sex. we also had sex 4 times that day. 2 days later i took the pill Plan B. about a week later i was feeling extremely tired, sick, etc. so i took a pregnancy test this morning and it was negative. but i also started bleeding yesterday, im not sure if it my period or implantation bleeding.
can anyone help me??

There is ALWAYS a chance you could be pregnant if you have sex. The "pull out" method is NOT a form of birth control, and never should be considered one.

I am sorry, but you are now playing the waiting game. You now have to wait until your next period is late and test using first morning urine.