I have a very regular cycle. The past few menstrual cycles have been only 22 days long my last period was the 2nd through the 8th of january so therefore my next period would be on the 24th through the 30th but for some reason i missed it i have taken several pregnancy test and all have came back negative i started spotting thursday the 5th of february and then heavy bleeding on the 6th and 7th and now back to spotting again could be i pregnant?