i've got flat feet, like, straight flat. my feet look like straight out of paleolithic era. i have perfected (almost, i guess, it's not bad tho) my squat and deadlift technique but they still cause me lower-mid back pain. specially squats, i feel a sharp pain in my left hip at the bottom position. can my fallen arches be the cause of this? i have never used orthotics since i don't feel pain when walking but i've been basically bedridden for 2 weeks now since my last squats and deadlift session. my back is so stiff it feels like a skateboard. is it worth consulting with a PT for this?