Hmm, I'm not sure but I will share that I had labial tearing with no perineal tearing (with my first) and I definitely had some concerns at first with the way it was feeling but that was pretty short lived and everything went back to normal within a few weeks. I have no idea how similar my tearing was to yours though.
I'm not sure I'm understanding the weight loss thing correctly. Is it that you are worried that rapid weightloss might effect your supply? I'm not sure about the breast/nipple pain but I've definitely had both in the first weeks after my babies were born. I'm not a fan of pumping or hand expressing (other than just enough to relieve engorgement) because IME it just causes more pain and trouble if things are progressing normally.
I'm not sure I'm understanding the weight loss thing correctly. Is it that you are worried that rapid weightloss might effect your supply? I'm not sure about the breast/nipple pain but I've definitely had both in the first weeks after my babies were born. I'm not a fan of pumping or hand expressing (other than just enough to relieve engorgement) because IME it just causes more pain and trouble if things are progressing normally.