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?