Who has the link to the list of meds we can take??

I need to know if Doxycycline is ok for my pouch?? My PCM said it would be ok, but I am having wicked stomach cramps and diarrhea. Anyone got any info??? I am only three days into this treatment and am supposed to continue for a full 30 days!!! I need to decide now if Im going to discontinue this med.