Period not normal

So my last two periods have been really weird both a week late and then 4 days of spotting and two and a half days of heavy bleeding. My boyfriend and I have unprotected sex all the time using the pull out method. Multiple times where he finishes wipes it off and then puts it back in. Is there a possibility I could be pregnant even with having a period beginning of October. I've had sign of pregnancy like really soar boobs, really bad heart burn really random Nausea I have gained 10 pounds. Just really worried and wonder when I could take a test or if you think I am. Thanks