hey there [: im 15 years old.

well, the last time i got my period was on 2.28.08
i had unprotective sex - pull out method.
the boyfriend said that he didnt cum; but pre-cum?

but my period is irregular, should i be worried?
if my period was regular... when should i be getting my next period.

if i was pregnant, what am i going to do...
im 85% sure im not going to keep the baby.