Girls, question of an intimate nature, it has been 6 weeks since child…

Girls, question of an intimate nature, it has been 6 weeks since childbirth, there was intimacy with my husband and a lot of air and vaginal discharge?‍♀️ and the feeling was that everything stretched out there (husband of course didn't say anything) will the uterus shrink back to its previous size? Who had this, share your experiences.