Am i forming a canker sore, or could it be my braces' wire?

I recently got braces(yesterday) and obviously, it does hurt, my mouth is sore from all the pressure. Well i feel something bothering or poking my tongue. It feels like its by my molar, but it really bothers me, i have this canker sore cream they gave me at the orthodontest should i put that on? Or could it just be the pain from the new braces?