you never know but if it was actually your period then your not. if it was abnormal i would test.
unprotected sex = possible pregnancy. Your symptoms sound like you could be pregnant but it also can mean PMS. Only thing different for me was that I had lightheaded dizzy spells that I never had while pmsing. That is how i could tell I might have been pregnant and in the end I was pregnant, the rest of the symptoms were my typical PMS symptoms. Im Now 39.5 weeks pregnant and baby is due Tuesday! hope you get the answer you're looking for. Good luck!