Could This Be Low Blood Sugar??

Yesterday I first ate around noon, about 500 calories (4 eggs, bread and cottage cheese) and then at 4 went to the gym and exercised at a pretty high intensity for two hours, an hour weight-lifting class (Bodypump) and an hour of cardio, including about 30 minutes of HIIT (high-intensity interval training) on the treamill. It was a great workout, I just felt strong and wanted to keep going (usually an hour and twenty minutes is the longest I exercise). I stayed hydrated throughout, drinking about 32 ounces of water, although I did sweat buckets, as usual. I felt exhausted by the end, but otherwise fine. According to my HRM, I burned over 1000 calories.

I came home, poured a glass of white wine, and started to cook an eggplant parmesean, feeling just great. I finished the glass of wine about the time I popped the eggplant parm in the oven. I still have not eaten anything since noon.

Suddenly, I start feeling strange. WEAK. Shaky, anxious. I just wanted to lay down and rest. I immediately thought of low blood sugar, so I ate some cottage cheese on a piece of toast, a prune, and then a little bit of sugar. I curled up on the couch for about an hour, maybe more, gradually feeling more normal. And, of course, looking up all my symptoms on my phone.

I just turned 35, I am in good shape, not overweight, and exercise 3-5 times per week, weights and cardio. I have no health issues. I ALWAYS exercise on an empty stomach, sometimes I won't eat all day and exercise in the evening and I have no problems with that. I did have one other episode like this back in November, I forgot all about it until last night. I exercised that day as well, but not sure if I ate afterwards or not.

So what do you guys think? Obviously, I am a little worried. I am thinking that exercising so hard, and then not eating anything in the hours after I was done, plus the wine (which drops your blood sugar, correct?) all added up to my blood sugar dropping too low. Maybe?? I'll go see a doctor soon, of course.