I had a pretty severe reaction to 6MP. about
2 weeks after starting it, I had flu-like symptoms---achy, diarrhea, nausea, fatigue, fever. I also had reddish bruise-looking lesions on my shins which were painful to the touch. I soon learned that the "flu" and "bruises" were all a part of Erythema Nodosum, which was definitely caused from the 6MP.
Definitely contact your GI doc.
Let us know how you're doing.
54 year old female;
Have had Crohn's of terminal ileum for 10 years. Small bowel resection (my first) on 7-30-09. Monthly B12 shots.
On Humira since Dec. 2008. Allergic/hypersensitivity to Pentasa, Entocort, and 6-MP.