Shocking Blood Sugar Numbers

I write this from Buffalo, NY. after having dinner at Duff's, known for their wings and the food was excellent. So after a long plane flight mostly waiting in the airport I didn't eat well. I usually eat low carb. Today I had:

• Pizza
• Pretzel
• 2 bags potato chips
• Chocolate candy
• Chocolate cookies
• Pretzels

Then for dinner:

• Steak wrap
• Chicken wings
• Cheese sticks
• French fries
• Ice cream
• Light beer

I took a Metformin around 2 PM and then with dinner. When I got back to my room after dinner I was shocked to see that my blood sugar was 83 where I expected > 160. I tested 3 times and 83 came up each time. So my question is why? Some possibilities:

• The Metformin is working
• I just started lifting weights and it's working
• Something at home, maybe mold is making my blood sugar high
• I've been doing the Tim Ferriss 30 gms protein/within 30 minutes of awakening and maybe that is helping
• I ate so much that the food hasn't been digested yet
• I had alcohol which with the Metrormin which is keeping my blood sugar low