Laxative de addiction while pregnant.

Hi... I was diagnosed with anorexia during my teenage years. Since my early 20s I started taking laxatives due to constipation. Initially I used to take dulcolax. When that stopped working I started taking kayamchurna. It's been almost thirteen years that I have been taking kayamchurna daily. I became pregnant in Jan 2021 and my doctor told me to stop kayam. Instead she put me on movicol. Initial four days after stopping kayam, I was constipated however then movicol started working and I was going daily. Until now. I have become constipated again. I have been taking movicol but it does not seem to be working. Tried isabgol also but it's not working. I'm unable to eat because my stomach is bloated and heavy. How can I get some relief from this situation?