Postpartum vagina changes

My December baby was my first so I don’t know if these changes are normal or not. For one thing, tampons seem to only get saturated on one side. I put one in this morning and it began leaking after like 20 min...I changed it and it was only full on one half. As for sex, the only position comfortable for me now is missionary. I can’t do from behind at all or else I have to pee and it’s just SO uncomfortable! I went back to my dr 8 weeks or so pp because I felt a “lump” inside, she said it was just my bladder hanging low from the birth. 😳 I had a 3rd degree tear. Will I ever go back to how I was? Are these normal physiological changes after childbirth?? Anyone else experiencing this? 😩