I have just recently had a Colonoscopy.. Before the procedure I had to take Picolax, after taking the first dose I noticed a blister come up on my finger, throughout the day I had several more blisters appear, they swell up and are very sore. They keep going done and sweloing back up again. I take Methorexate on a weekly basis (15mg). Could I have had a reaction from taking the Picolax??