More information is better, oh and to steal Dave V.S's line...lower back pain is nothing to fuck with. If it's been weeks now it might be time to see a sports doc.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."