Still high appetite

So had my baby yesterday and I still have a good appetite. Like I want to snack all day like when I was pregnant. When will this feeling go away? I am breastfeeding too so I know it's good to snack to help my supply come in. Also my baby seems hungry today even after I nurse for over 30 min. But all he is getting is colostrum still. I don't want to supplement cause it might affect my routine. Anyone else experience this?