Pregnant or Hormones

Help. Yesterday I had the worst headache ever in my right eye. I slept all day. Whenever I tried to eat I got a sick feeling like nausea. Nothing really wanted to stay down. But nothing has come up either. Today I have a slight headache very mild but again I can’t eat anything it makes me sick. I also have the most sensitive nipples ever. I can’t stand when my boyfriend tries to lick on them. I was on depo for 9 years but came off in December. Had a period since December 24th. It went away for one day. Now I feel the end is near cuz the blood is brown with a little bit of red. Last day of unprotected sex was last week Tuesday but I also had a doctors appointment that day and they said I wasn’t pregnant. What’s wrong with me.