Re: low back/pelvic pain
How much lower back work do you do?
Other things to do may be anything that decompresses the lumbar. Leglifts, slow or fast from a hang and they can also be done in support. Reverse Leglifts/Hypers. Back extensions, decline situps/GHDSitups/Inverted situps.
Sometimes when we had lower back pain, we would just hang from our knees off a low bar playing with a bit of extension and flexion upside down.
Snaking on the floor can also help loosen up tight lumbars besides stuff like Lying Wiper or Lying tuck/pike leg lifts. Also those twisty things sometimes called IronCrosses or Scorpions.
You could try some hot pepper rub but I would probably try literally anything before I use that stuff again. It hella burns.
Damn, forgot I was supposed to get some Tiger Balm yesterday. I find that works good and doesn't burn my skin for hours.