That sucks - I'm sorry about that. Have you tried any other biologic except Entyvio or is that your first? Remicade or Humira is the next obvious step if you haven't tried either of those. Stelara and Xeljanz are more recent biologics, but not as commonly prescribed for UC.
Yes, I was on Humira for about
5 months but had to stop taking it due to severe panic attacks it was causing. From that experience I went to Entyvio. I called the doctor's office this morning relaying my current situtation and am waiting to hear back.