Guess my blood sugar dropped

I'm going to throw up. Should I go to our bathroom? Or outside. Outside's closer. At the door I yell for Tommy. Last memory until I'm on the floor. Good grief. What is going on? Do I need to call a doctor? No. I'd be sent to the emergency room where I'd spend the day. But I want to be sure I didn't have a TIA (mini stroke) because there's supposed to be something you take immediately after one of those which prevents permanent damage. Tried to get hold of a nurse buddy... no answer. Tommy pulled out a medical book; we ruled out stroke. So what on earth happened? Went to Pilates this am for the first time in ages. I really need to work out some serious stiffness in the old joints. Had a satisfying workout and came home. As I fixed smoothies I began to feel befuddled. Dad had come in (thank you Lord.) Then the nausea. So what did happen? When we got up I'd had coffee, coffee only, while Dad and I sat outside. That is our weekend routine. About 8:30 he left for a run and I went to the Club for Pilates. Came home and started work on the smoothies. How crazy. My blood sugar must have taken a serious trip south. After Tommy caught me at the back door and brought me to the floor, he says I was minimally responsive for about a minute. Then I sat on the floor and sipped the smoothie. We walked around outside for a while. Since then I've sipped Coke and eaten some cheese. I still feel slightly nauseated but fine. Now while superDad cuts the grass, I'm taking it very easy inside. A lot of drama just to get to take a day off.