You should call your Dr. Or go to the er. It could be nothing but when its lower back pain and your not feeling right its beat to go in. It could be an infection
Down by my utrus hurts too and feels hard and I woke up like this my ribs hurt
Ive had back pain since i hit about 17 weeks. My baby is fine. I think u should be fine but if youre really concerned then call your doctor or midwife