Ooooh dear! IBS and blocked toilets. Been there, done that! I've learnt to flush in the middle of a big BM, however awkward! Very embarrassing when I blocked the loo at my son's.
We had a few fun days recently with a shared blocked sewage pipe recently. Modern technology in the form of a camera revealed the blockage was caused by a broken house brick. Lovely water board men pushed it into the main sewer, which then was no longer our responsibility. No bill for the digging up. But it was stressful. IBS and no loo........🚽