Hello! It's been almost nine months since childbirth, and my belly is …

Hello! It's been almost nine months since childbirth, and my belly is still loose? Will it always be like this? He's thin, but there's a lot of skin in one place, you can even pull it off... maybe some exercises need to be done? Or will it always be like this? I was always slender myself, went into pregnancy at 48kg with a height of 170cm, during labor I weighed 68, but then the extra kilos went away quickly and now I'm back at 48-50kg, but this belly?