Awful pack pain

I’m 33 weeks tomorrow and I have the worst lower back pain. I cannot stand straight or bend down. I’m walking very crooked because I can barely move. Could it be the baby causing that pain or how I slept ? I have this pain almost every other day and it’s unbearable. I hate taking pills but should I take a Tylenol? Back massage doesn’t seem to help because it feels like it’s coming from the inside out.