I went heavier than I ever have with deadlifts today, and toward the end of a set I felt a terrible weakness in my lower erectors and a dangerous sagging feeling.
A few minutes later I noticed that my lower erectors (lliocostalis lumborum, multifidus and maybe quadratus lumborum?) were in pain whenever I bent down or placed unilateral loading on my body. I stopped deadlifts since I couldn’t stabilize my core without pain.
There is no pain with: palpation, minor unloaded spinal flexion, spinal rotation
There is pain with: loaded spinal flexion and rotation, and significant stretching of the muscles
The pain does not radiate down my leg.
If anything, this feels like extremely accelerated and slightly more painful DOMS.
Is this just a case of overdoing it? I don’t think I herniated a disc, but I just want to hear from people who know more about hernias than I do to be sure. Are there any tests for hernias besides MRI and the radiation down the leg?