Crazy Dizzy

You know all those times I told the computer how I was getting diabetes from all the candy I have been eating? I think it finally worked. I am not sure, but for the last few days, I have been really dizzy, and find that if I don't eat consistently, that I feel faint.
Today I had taken the kids to the park. Thomas decided to climb the big mountain. I was busy reading a book (thank you very much), then i heard him crying. I walked over to see if he was ok, and was met by Hazel and the neighbor saying he was hurt really bad. He had quite a cut on his knee. Enough that I thought we needed to go home, and possibly needed stitches. I got home and was cleaning out the wound, and after I was all finished picked him up to carry him to the couch or a little R and R. I had the little kids on the counter, stranded. (They are so much happier when the can see what is going on, and what I am doing.) Before I can make it to the kitchen, I start to feel really nauseated, and dizzy. I yell for Tom (Thank goodness he was there) but he doesn't come. I yell again, and again ignored. I stumble to the chair and yell "Tom, help me." Then I am out. Next thing I know, Tom is over me talking to 911 on the phone saying, "she is waking up now. After a few questions about who I am, and what day is it, I am cleared. I guess I didn't stay on the chair. My legs were twisted under me, and my back was hurting. I must have hit it on the way down. I think I had a seizure, and when I woke up my jaw was achy from biting down so hard. After some coke, I felt a little better.
I know what you are all thinking...pregnant. I thought it too for just a second, since I am kind of a fainter when I am pregnant, but first of all, I have am IUD ( too much information?) Second, I hadn't done anything that could make you get pregnant since my period thanks to Tom being out of town and all (wow, personal stuff here. It is cool because only girls and Mark read this, and Mark is cool about period stuff. ), but just to be sure, I took a pregnancy test. Thank you-negative.
Do you think I should worry? I am planning on not worrying.