Ectopic or just growing pain? Help!!

I am currently 7 weeks pregnant with my 2nd. So far this pregnancy has been different from the beginning. The last two day I have had a dull pain on my low left side that is pretty constant but definitely more noticeable when I’m laying down.

I have an ultrasound scheduled for this week, and will call my doctor in the am, but I am very worried that it may be ectopic from what I’ve read.

Has anyone had pain like this and it wasn’t ectopic??