Back Labor

Brittany • Hello everyone! I am 24 and pregnant with my first baby, my boyfriend and I have now been together for almost 4 years!
39 weeks and 4 days y'all! Always, since last night I have been having some back pain only on the left side that sometimes will travel to my side and to the front (mostly in the back though). My question really is, is back labor supposed to be so consistent or is it kind of like contractions that come and go? These pains today have been pretty consistent so far. 
Thank you!!