4day old Newborn... non stop crying

Alexis β€’ Im 23, you can call me Lexi πŸ’• First time mommy to a baby girl πŸ‘ΆπŸ½πŸŽ€ Was pregnant with identical twin girlsπŸ’• Guardian Angel πŸ‘ΌπŸ½ 4/26/17 Miracle Baby πŸ’•πŸŽ€ 12/13/17

I dont know what to do 😩 since last night my daughter was constantly crying and idk what is wrong. I fed her, burped her, changed her diaper. I think shes gassy and looks like she has a diaper rash. I wish she could just tell me what is wrong!