Help?

Ok so I wrote this a bit ago but I want to bring it back up because I have some new information that I recently found out about, sorry I'm under educated about pills and such and didnt know the difference between the mini pill and combo pill.

So my boyfriend and I have been having some sex here and there and normally its anal. He surprised me by actually going in my vagina, we had no protection and I have been on the pill however the day before was the end on my period and I had not taken the pill until after the sex. Is there a chance I am pregnant?

Side note: I have been spotting for the past 2 days and it's only when I masturbate, have sex, or am wet or horny.. so is that normal too and I'm stressed out for no reason or could I possibly be pregnant? Btw I'm on the mini pill