contractions, Braxton Hicks, Growing Pains

B
I've been up all night will a dull, aching pain in my belly and pressure. I've had this before, but never so bad that I couldn't lay on my side or sleep. 
Getting up feels better, but it's still off. 
Baby is still moving (a ton actually!) but I'm still worried. Anyone else feel constant dull discomfort like this? From what I've read, Braxton Hicks don't really last long and contractions are more like in waves. 
Thanks!