Need suggestions

Amanda • Soon to be a momma of 2! Excited for another baby! Wish love to you all!
I know you all aren't docs. And I know the option of calling a doc is there, so don't say it. 
I'm 16 weeks, I've been having mild cramps for about an hour or so and its going into my back. 
In anyone's experience, is this something to worry about? I'm pushing it off as growing pains, but I'm just not sure.