Help! I’m so confused

I found out I was pregnant on 1/28 previous to that I got a negative test on 1/22. MLP was 12/12 but often am irregular so I don’t know exactly when I ovulated. Baby danced on 12/31, 1/1, 1/5,1/12 I know for sure. I went to the Dr as I had got 4 BFP from 1/28-2/5, & they couldn’t see anything on the U/S. She ordered blood work and on 2/1 (hcg level 213) then on 2/3 it was 256. She just emailed and said she thinks it’s a chemical pregnancy but I still have had sore boobs, nausea and light headed feeling, along with exhaustion. Anyone else have this?