POTs and low blood sugar

Hey I was wondering if anyone here deals with POTs or other conditions and also hypoglycemia? I’m trying to talk to my doctor about getting a blood sugar tester because a lot of times I get really dizzy, shaky, tired, etc. and it helps if I eat something but it can also be because of my POTs. I would like to keep track of my blood sugar to see if it’s an issue and also treat my symptoms properly, but my doctor says that I’m going about this the completely wrong way and that I don’t have diabetes so there’s no reason I should be checking my blood sugar.