I can only think it was from riding.. I took my fixed out Thursday, which has a very leaned forward TT like setup to it.. came home, made dinner, eating I noticed my back felt strained on the bottom right side. A few hours later it felt like full on pulled muscle. I just rode it 2 days before for 40 miles and had no problem. I only did a few miles because it got dark and my GF was with me. Maybe 5-6 miles at most.

It's bearable, and I have icy/hot on it. I really want to ride tomorrow, should I risk it or wait a few days out? I have a big ride I'd like to do on Thanksgiving and don't want to miss out on too many training days.

Any suggestions to help in the mean time?