Lower back pain at same time

I need moms to give me an answer or Atleast some ease as to what or why this could be happening.. the last two nights in a row at the same times early in the morning, my lower back will be so dull/achy and it hurts and is very uncomfortable. It wakes me up and I can’t sleep or get it under control unless I get in warm bath or ice pack. Even then when I’m done it hits me again. It send pains through my hips and my thigh as well. It’s like growing pains x15.. I don’t have any cramping feeling in my front abdomen. I did get an all over tightening in my belly the previous night, but it released pretty quickly. I’m currently 34 weeks. Has this happened to any of you moms? Do you think this could be signs of Braxton Hicks even though it’s geared in my back? I find it odd it’s happening same times in the mornings as well