Hi I'm in my last month of birth control and have been using unprotected sex with my husband since. September,. The past 2 week's I've been having headaches every day, I'm urinating a whole lot, I'm falling asleep really quickly, my lower back hurts and im feeling nausea. I have taken 3 home pregnancy test and they were negative but somethings not right can I help me before I c a doctor?