Why do I feel so drunk?

Okay, this is a complicated one. I’m going to lay down the facts, then the situation.

I’m female, type one diabetic, have been drinking casually for many years.

Extremely hard to get drunk. I have chronic high blood sugars and the higher my sugars are the easier it is to get drunk. I used to exploit this to the detriment of my health.

In the past 5ish years I’ve become much more stable with my blood sugars and healthier. I don’t drink often and when I do I rarely get drunk.

Recently, I’ve been having many weird symptoms that indicate something besides diabetes is affecting my health. It’s been months and I’ve had many different tests done. I haven’t narrowed anything down with my doctor yet.

My recent blood tests indicate a high chance of lupus or vasculitus. Possibly Lyme or some other autoimmune issues.

Okay. So the situation:

I just had a drink for the first time in months. I mixed a shot of raspberry smirnoff with 710 ml of 7up. This isnt even enough alcohol to feel it normally.

I haven’t even finished my drink and I’m extremely dizzy and light headed. I feel like I do when I’m extremely tipsy. My blood sugars have been fine all day.

Also, I have made this exact drink before with the same bottle of smirnoff.

Does anyone have any ideas what’s causing this reaction/ drunken state that is extremely unusual for me?

Could it be related to my recent health conditions or maybe due to the fact I haven’t drank alcohol in a while?

TLDR: It’s usually very hard for me to get drunk but tonight a very small amount of alcohol has me feeling drunk and I’m very confused.