Hello there. I'm 21 weeks and i had the same pain right around that same time and again last week. i also had a c section with my bby and doctor sd it was because of that and growing pains as well. But call your Doc as well. Good luck (:
Thanks god bless you and your pregnancy and family
This also happened to me in early pregnancy i think it can be the old scar stretching out the back pain not too sure i only had belly pain