Question about pant sizes?

our team ordered sweatpants and sweatshirts but Im in doubt, I usually can wear 32-36 36 comfortably and 34 ok, im a little overweight. i ordered XL because everyone and even the coach said Xl would be better than L cause he said the pants come in pretty tight when u put em on . is this the case for sweat pants? do u think i could wear 38? because 36-38 = XL