So I am 22 years old and in a steady relationship. A couple months ago I started getting headaches everyday and dizzy. About a week later, I was late for a period (never happened before). I took a pregnancy test the next week but it was negative. I thought I had piece of mind until I started getting more pregnancy symptoms. By the time my next period was due, all I got was a tiny bit of old blood (brown discharge). I took another test but still negative. Now I am going crazy because I still have these symptoms. If I was pregnant I'd be 9 weeks. I am not stressed out at all and my mind is not playing tricks on me. I would be completely convinced I was pregnant if I wasn't on the pill. I know the chances are very unlikely. The main thing that gets me is now I have constipation, which I never had before and even my belly is starting to get bigger/feel different right under my belly button. I have not gone to the doctor but no matter how relaxed I am, these symptoms won't go away. Any ideas?