Weird symptoms

Elizabeth • Mommy of one beautiful girl, and twin boys (:
Two weeks before AF came, I felt sick and had pregnancy symptoms. Then she came, all test have been negative. It's going on day 4 since she has ended and I'm still spotting. (Average length is 7 days for period.) spotting started as brown now it's back to pink, I've already thrown up once, came close 4 times. And sorry but diarrhea for two weeks. (Always get it when I have my period) but I feel so sick. If I bend down to pick my daughter I have to quickly turn away before I throw up. Pregnancy test are still negative. I just don't understand. I'm at a loss as to what this might be. I am trying to have another baby, so I don't know. Sorry for this being so long!!!