Back pain and mid belly pain while pregnant

I’ll be 30 weeks in 2 days. Today I just started to experience really bad mid belly pain it’s sharp and goes straight through my mid back also. The pain in my belly somewhat went away but when I breathe in deep the back pain still hurts. I did get some cramping earlier this morning and it felt like mild period cramps but went away. I’m sure this isn’t Braxton Hicks cause the sharp pain lasted a lot longer than just a minute or few seconds. It’s pretty much gone now but is this just really bad growing pains?