Postpartum sex concerns

Hi ladies, I am 4 months PP and I had a C section. I don’t understand why but sex just doesn’t feel good for me ever since I had my baby. It feels like my vagina is kinda raw on the inside which makes no sense to me because I didn’t even deliver vaginally. I’m exclusively breastfeeding but we do use lube (and condom which is our only BC right now).

Does anyone know why that may be? Besides of my vagina being sore, I have negative sex drive... my poor husband!!