Pregnant, Period, or Pill

Can someone help me out? I am having some symptoms that I am trying to figure out. A couple days ago I experienced some spotting for about 2 days, but I just figured that it is ovulation bleeding, which has never happened to me in the past and I am not sure when I am supposed to be ovulating because my period has been kinda weird lately. I was on the pill last month, but did not take any this month and had unprotected sex. I am also experiencing dizziness, pain in my breasts, lower back pain, cramps, and tiredness. I've been pregnant before but did not experience any symptoms before missing my period. Are these symptoms of pregnancy, period, or coming off of the pill? Thanks for your help