Girls, I've been lying on my left side all the time, it seemed fine un…

Girls, I've been lying on my left side all the time, it seemed fine until now, but the baby was kicking his legs from the right, in the end I don't know if my back hurts or he kicked me! I can't figure anything out, all the tests are okay, my back hurts, or maybe my kidney is hurting, the sciatic nerve is also hurting, what should I do? My doctor already told me...