Hmm,I remember I could feel the inside scar for a while also(under the skin,on a cervix-I'm skiny too) but it went away after some period of time(maybe a year) and it wasn't painful.I mean I still could feel it if you press on it,but not like it was inflamed. In your case if it hurts and swollen,I'd ask a doctor- could be scar tissue forming.
IVF#1-BFP,but lost our angel at 16 weeks
IVF#2-BFN
IVF#3-BFP,started w/tiplets,lost one at 7 weeks,lost a second at 15 weeks
Praying for a miracle baby to stay with us!
It's a girl!