please give me advice

To start I am 40 weeks pregnant exactly, I also have not felt any Braxton hicks contractions, no obvious signs of labor. I figured I'd have to be induced. And as a disclaimer, I'm a FTM so if I have a Braxton hicks contraction idk what they feel like so idk. I've had tailbone pain my entire pregnancy, my mom said I'm gonna have back labor. Over the last week my hips have been hurting so much and inside my legs. 5:30 this morning I woke up from my back hurting, it felt like I had pulled a muscle on one side or something but I sleep in the same position every night and never have this feeling or sleep uncomfortably. Still brushed it off went to the bathroom. It was hard to sit. Went back to sleep woke up at 7 the pain wasn't there or wasn't really intense like it was so I got up went pee, ate something laid back down and fell back asleep. Woke up feeling fine and started cooking my lunch. I put things in the oven fine but suddenly my back hurts so bad I can't bend over. My stomach did seem to feel right and pointy for maybe a minute or less and went away. The only thing that hurts is my lower back all over. Not my tailbone. When I called my mom she told me to keep moving and see if it gets worse and take a shower because I could possibly be in back labor and not know it. My lower abdomen on the sides is slightly sore too. What do you ladies think? I have a high pain tolerance, very high. I'm having a hard time determining the difference between normal and abnormal pain.