I take the progesterone on days 16-26 (I have a luteal defect) and I'm on Levothyroxine for Hypothyroidism. I feel great with the levo, but when I add the progesterone, I go back to feeling the way I did before taking any medication. Fuzzy, nauseous, really emotional. I produce way too much estrogen and hardly any progesterone. I'm not prego or trying. Any insight on my I should be taking it if it makes me feel sick?!