I am brand new to all this Diabetic stuff,,, so here is my question for 1 month my doctor had me on Glipizide 10 MG XL,,, I went in today for a recheck and he wrote me a new script for Glipizide 10MG,,,,but it is not the XL,,,, is there any difference, is it okay,,, my doctor will not be in his office for the next 3 days, I have to take the Glipizide 10MG,,, will that be okay?