Wa'alaikumassalam! Congratulations on your normal delivery, mama! Benang jahit biasanya start gugur sendiri around week 2-3, tapi healing penuh boleh ambil sampai 4-6 minggu depending on how your body recovers, ada yang cepat, ada yang slow sikit. For the soreness, normal je rasa senak-senak especially bila jalan atau lepas cuci area tu, sebab tissues masih healing kan, tapi kalau rasa severe or kalau ada discharge pelik or bau yang aneh, better check dengan doctor atau midwife kamu just to be safe, a few of my mum friends also had that soreness sampai week 3-4 pa, so you're not alone!