38 weeks 3 days early signs of labor?

Melissa
I have cramping in my lower abdomen and lower back nothing sharp or very painful just a very subtle long lingering pain for 3 days now. It feels like a lot of heavy pressure almost painful at the bottom of my uterus where my cervix is. Also a decent amount of pain in both my breasts. I am calling my doctor in the morning but if any of you have gone through any of this and know what's going on would help me sleep better tonight. Thank you so much