Background, I'm 19 years old, 167 lbs, 5'10", I've been lifting for around 3 years. About five weeks ago, I was warming up for some sumo deadlifts with 175 lbs when I felt 2 pops in my lower back, one just above my pelvis and one about a vertebra higher. I stopped lifting out of fear of having seriously injured by back and made a doctor's appointment to see if I had messed myself up.
I went into the doctor a week later and by that time most of the pain had stopped. there was still some when I bent backwards or forwards a lot, but nothing too serious. He recommended that I take a month off of lifting before working my way back in over a month.
I took the month basically off, only some stretching/ light running to release some energy and relieve any back pain. For the past week I've been working my way back into lifting slowly. No lifts have made me have serious pain, so I haven't been too worried. Today was bench and rows. Benching was fine, no pain. When I tried 150 lbs cable rows, I felt a bit of a twinge in my lower back. When I stood up, there was some pain in the same region I had hurt my back and it got worse when I bent backwards or forwards. I felt the gym again to avoid making the problem worse.
I am pretty pissed/ worried that I might have seriously hurt my back now. Should I just take a few days off and try to go back too it? Go back to the doctor? He said for more conclusive results they'd need an MRI. I thin my insurance will cover it, but I'd rather avoid it if I can. Any advice would be appreciated, thanks.