Okay mom's I need serious advice! April 20-21th I had a really heavey/cloty period and the 22 it was really light. So 3…

Okay mom's I need serious advice! April 20-21th I had a really heavey/cloty period and the 22 it was really light. So 3 days. The 23rd I was vomiting and had the diarrhea(flu) since then I've still been "off" stomach nausea and diarrhea. May 1st I got a tooth ache, swore it was by the tooth I had a previous root canal done so I was confused. May 2nd the pain subsided and my cheek swelled with obvious infection but my stomach was feeling better. May 3rd I was feeling better cheek still a little swollen. Last night cheek went down but tooth started hurting again and now I had really bad stomach cramps and vomiting. This morning cramps subsided, I have soft stool again, and vomited once and seems to be done. What the hell is wrong with me?! I did take a pregnancy test may 1st becauae of the upset tummy and it was a heartbreaking negative.