Anyone taking Predisone before FET

Tap

Hi all my doctor asked me to take predisone day before transfer and till 4 days after. I have transfer today 12/3. I started taking it yesterday 2 times daily and today morning had very bad stomach pain and black stools, I could not sleep after 4 am. I checked with my doctors today morning before transfer and he asked to stop it.

Who else takes this med and what you guys feel. In google it says help with implantation. I have FET Transfer in next 2 hrs and confused.