I've been on Azathioprine for about 5 months now and just a month ago I had my dosage changed from 100mg to 75mg because I had really bad nausea but ever since the dosage had been changed I've been getting extremely bad abdominal pain which has almost extended past my lower abdomen and towards my stomach which scares me because a was already told that my crohns had extended an extra 25cm. My doctor said that if this medication does not work then biologics would be the next stage which I've heard has much more risks. I don't even know what to do anymore. Any advice?