Has anyone experienced a pulling feeling on the top of the stomach or anywhere in the stomach area being 19 weeks pregnant?

I’ve notice these couple of days I felt a pulling feeling the feels like it’s going up and down. It doesn’t hurt at all. But whenever I move a certain way I can feeling the pulling feeling going up and down. Top of my stomach until lower part. It’s always around the belly area too. I’m worried because it’s been like this for a couple of days. What am I feeling is normal? Or it’s something bothering interfering with the baby? God forbid that of course.