After Childbirth, My partner  complaints that she doesnt feel my penis when it is already well erected. She said she feel it initially and when she arouse then not feel during direct thrust. I also feel her vagina is wide open. So I need to change my rythems like round or sidewise etc. to make her feel to get orgasm. This is unnecessary exercise from me too and i scare of lower back injury.  Is it completely normal after vaginal delievery as i am already full erect and not get loose or is there any error we are doing? Anything else i can do.