PREGNANT?? HELP?!?

I am currently on my second month of the birth control pill. I have a 21 day pack and then take a 7 day break which is when my period should come. Last month I was 2 days late but still came on as usual.

2 weeks ago, I got put on antibiotics and While on these, I think but am not certain that I was fertileand had unprotected sex with my boyfriend. He did not cum in me but some of it may have slightly gone inside as he went to pull out. I am now 5 days late to my period. Am I pregnant? Not taken a test as I am waiting until Friday.