Sciatica / pelvic back pain

Jessica • 30 | pcos | Due Oct 2022 | getting induced in September

Hi does anyone have or had horrendous back pain in your pelvis? My back / pelvis & hip keep locking . I’m 20 weeks and the midwife is sending me for physio but I’m on the brink off not being able to cope anymore. It hurts to walk sit stand and lay. I’m taking paracetamol and have a hot water bottle constantly on my hip. Is there anything else I can do?