Recently Since I Sprain My Ankle I Have Serious Low

recently since i sprain my ankle i have serious low back pain again...i thought last year i solved my back pain with the hospital physio and the wellness physio classes couple times a week so it caught me off guard when serious pain come about again. wondering if okay to work my physical job having a weak muscle ...i felt like i need repetition of strengthening the specific weak muscle because i am single parent of 6 kids and doesn't feel good to feel pain but i rather solve problem