Just sounds like you tweaked something a little, especially considering there's no pain. Take a couple days off anything heavy and see if you feel anything funky. I had the same sort of feeling in my left lower back a few weeks ago. I stopped training as soon as I felt it, then took a couple days off any lower body stuff. Then I did squats as a test and waited still a couple days more before pulling again. I never had another issue.
Don't push it, but don't be afraid of it either.
Current PRs at 242, raw w/ wraps- 525, 355, 605, 1485
Roboro tui, perimo vester adversarius
(Build yourself, destroy your enemy)