Remicade and racing heart

I'm on my third infusion. Up till recently? It was a wonder drug. I got all my energy back, no more random joint pain and everything was going great. Then my third infusion happened. And I get jimmy arm. It's like jimmy leg, where you can't stop it from bouncing. Only worse. It's like my arm just won't rest. The next night? Both arms. The night after? Chest pains, racing heart, breathing shortness, all kicked off at 3AM with a lack of sleep. This is all very new to me and I'm waiting to hear from my Rheumatologist if I should go to the hospital or not.