That's just stretching, hun. No need to be concerned. My daughter is breech and my ob had to put me on meds because her bottom is pushing super hard on the nerves in my back. I'm 27 weeks, btw.
Sometimes in the lower part of my stomach or in the netherlands
I'm 22+2 and my baby is breech and it doesn't cause me pain. Where is your pain though? I do have round ligament pain.