Frequent motion passing 30 week pregnan.

Hi,I am 30 week pregnant with high risk pregnany (twin) and I am having stool passing 4-5 times a day though motion passing is small in amount but frequently is high.Stool passing is normal not watery,no pressure needed for pooping.No abdominal pain or discomfort.I did not have any outside food or nonveg.My gynac told me this is not pregnancy related so I hav consulted gasterosurgeon but no output as stool test/culture report everything was normal.For 3 dys I had probiotics and metrogyl 400mg antibiotic then course of medicine was over.I am having progesterone tablet everyday at night that is not orally taken.I have stopped iron medicine and protien pwder intake as well and right now I only have khichadi in my diet.I am scared to eat anything now because there is always an urge to go to bathroom.Can someone pls suggest is there any solution to this problem?