I was on prometrium suppositories for my first iui and nausea is one of the listed side effects. I suffered from it starting 2-3 days after my first dose. It can
also make you tired
, dizzy, cramps, bloating, worry, irritability, headache and sore bbs. Unfortunately some of those are also symptoms of pms and possible early sign of pregnancy. It really messes with your head as you get close to the end of your ttw and you are trying to guess where your symptoms are coming from.