Back pain!! 😩

Last Monday I woke up with a sore back, I was having a little trouble walking (was just a tad slower than usual). By Thursday I was limping, but I figured i could bring it up at my dr appt that day. My ob basically said it was a normal part of pregnancy- she referred me to a back class (two weeks away!). As of yesterday morning I cannot walk. The pain is agonizing. I’ve been awake in bed for two hours, because I can’t even move my leg without feeling pain. I’d been feeling pubic bone pain for a while already, but this pain makes that pain feel like nothing!! Has anyone else experienced this? If so, how did you cope? I have 25 days to go and a two year old boy that I want to spend time with before baby comes. This is really making me feel depressed 😩