Skin tag under my neck. Cause diabetes!

There's skin tag or acne sort of thing under my neck near the end of beard close to centre area. I thought it's brown or light brown. It's not too big but i can pull or grab it with my nail. It's not noticeable until i raise my jaw up to see it. I searched about it. There's not much information about it especially the cause. It says it's mostly harmless. But it could be due to diabetes or insulin resistance. Now last month..i was every anxious about my other problem which made believe that i am prediabetic or type 2 diabetic. So, with all courage i went for the hba1c test. And the result was 5.0 -so not Diabetic. But now when i see the reason behind a skin tag formation i feel like i have got diabetes now for sure. So, i am confused. I know i should believe the report of last month but first i had frequent urination problem and now i have one skin tag sort of thing under my neck. I am getting anxious about it. Because both things are related to insulin resistance which cause diabetes