I would definitely check with your gastroenterologist about your numbness/tingling. I'm not on Remicade, but just a super quick search on it indicates that you should notifiy your doctor immediately if you're on Remicade and experience these symptoms, as it's a rare but potentially serious side effect. You can read more about this on such websites as drug.com and web.md. I hope it's OK to post two of the websites below that mentioned numbness/tingling.
It could be the lialda, how long have you been on it?