Uterus feeling weird PP

I'm 3 weeks PP and it feels weird to touch my gut area - it doesn't feel like my stomach use to it's almost like it's more tender to touch still - it's probably still uterus that needs to shrink back ? How long did yours take until uterus feeling was gone ?

Like when I put lotion or bio oil on my midsection it feels sensitive - not painful but not like it wAs pre pregnancy . Did anyone do anything other than a girdle to help shrink their uterus faster ?

Also when does that line down our bellys go away ? 🙈🙈🙈🙈