Had first

<a href="https://glowing.com/glow-fertility-program">IUI</a>

December 21st. At first felt what i thought was for sure pregnancy symptoms. Sensitive smell, cramping, lower back pain, headaches, slight breast tenderness, mood swings. Tested a few times all negative. Had brown spotting, Af was 2 days late then had bleeding for two days which was heavier and clotty. Now absolutely nothing. My periods are usually at 3-4 days. With every cycle. I did take clomid for a second time this try. My first period after taking it( had to cancel as i ovulated early) i had a lot of spotting which was heavier and then my normal 3-4 day period cycle. I now feel no symptoms either. I don't know what to think. Has anyone experienced something like this and was pregnant?