Remicade and iv fluids

I have been on remicade for 4 years. I never had any allergies until 6 months ago. I don"t have reaction to remicade it self but is it possible that remicade is creating all of this reactions to other drugs. First it was benadryl. I was given benadryl prior to remicade until 6 months ago after I got benadryl developed tremors, tachycardia and feeling very dizzy. All this prior to remicade infusion. I was treated with solucortef and IV fluids and it went away. 2months later I restarted taking paxil. 5 days into it, same symptoms but more severe and I ended in hospital. Lasted for about 5 hours. 2 months after that I took valtrex that I take as needed. Same thing. K dur 10 meq caused severe diarrhea. I am to the point that I am afraid to take any medication in fear of reaction. Could all this be caused by remicade. If I stop will it go away. Any suggestions?