Every symptom you mentioned I had with active flares
Inflammation, dehydration and malnourishment can cause all those problems.
You really need to talk to your doc...you will only stress yourself out reading other people's problems! Are you due for an infusion? That could be the reason you are feeling more ill. Your doc may end up changing your infusions or trying something else if you are losing the effectiveness of Remicade.
Hang in there and stay calm until you have had a chance to talk to your doc.