How long till vagina is normal again?

ch
So I'm 3weeks and 2 days postpartum and lately if I move a certain way, air gets up in there and it's almost like a queef! Lol I had a 2nd degree tear but my bf looked down there and says it looks really good. I'm still bleeding but I feel loose inside and as I said if I move certain ways air gets in there. The thing is at 2 weeks I didn't have this issue it just started a few days ago. Anyone experience this or know how long till it's back to normal. I look pretty good down there and I do not look loose but I feel it!