Help, Kinda freaking here!

Well ya'll know how I passed out Saturday night for no 'real' reason. I had thought that it was possibly because I hadn't eaten a whole lot that day although I did have 4 chicken nuggets and a candy bar before we left. I went to the dr yesterday and told her what happened. She didn't seem concerned over the fact that I had passed out, just checked me for a cuncussion(sp?) etc.
Okay, so today I worked all day long with my MIL. I had coffee cake for breakfast with coffee of course. At lunch MIL bought me a grilled chicken sandwich with fries and diet coke from Jack n the Box. It was HUGE and I ate it all. I also had a granola bar between breakfast and lunch and a candy bar (real healthy, i know) for snack before we left at 4:30p. So, after we got back to my MIL's I got my car, went and got gas and then drove to my parent's house to pick up Payton. ON THE HIGHWAY on the way to get Payton I almost passed out again! HOly crap did it scare me!! I could feel myself getting really dizzy so I slowed down but it was a 2 lane hwy and there was no where for me to pull over. Thank GOD I gained my composure aside from the fact of having rapid heart palputations which were probably caused from anxiety of thinking that I was going to pass out on the hwy and die.
I told my parents what happened. They are convinced that I don't eat. Whatever, I eat CONTSTANTLY! LOL Seriously, I could never be an anerexic. But I am really freaked over this. I will be calling the dr tomorrow, but help ease my mind some ladies! What could this be caused from? I had a total work up in Nov. and am negative for diabetes, cholestrol is good etc etc. Oh, and btw I have not taken any vicoden since I have filled the prescription. Didn't want to be too tired to wake up at 5am today or for work. I did take 5 100mg Advil today but I have been taking it all week and the Dr said that was fine for during the day and to take the Vicoden at night. Plus, I took that around 6:30am so it was not in my system at the time that I got dizzy. Could it be something like low iron? I know that I don't eat enough meat but I do eat a lot of almonds, peanuts and cashews. Oh, and ever since I had my dizzy spell tonight my eyes are blurred. It's like they can't focus well. I just ate a bowl of Healthy Choice Chicken and dumplings soup and a granola bar so we will see if that helps.
Any suggestions, comments, ideas? I never would have thought that I could pass out while sitting in a car driving. Have I mentioned how totally FREAKED I am over this?

Well I just looked up 'low iron and fainting spells' and that could definitely be the culprit. Guess I will see about getting an iron test done tomorrow or something. I feel a little better now Still freaky though!

I've had migraines all week after bumping my head Saturday night. That is why the dr prescribed me vicoden.

Dawn, all they did yesterday was take my blood pressure then check my ears, eyes, nose and she had me do some stuff to check my reflexes or something. They didn't do any blood work. I will definitely be calling in the morning. Darn it, I was looking forward to a day of shopping, not going to the dr again!

Yeah, they checked me for diabetes since it runs in the family and the tests came back fine.
The 5 advil that I took today actually helped my head a TON! Today was my first real day of feeling normal
Okay, here is something strange. I finished eating right before I typed up this post. My tongue is TINGLING. WTF does that mean? Seriously, it is like my tongue has fallen asleep! Never in my life have I ever had this feeling. I am weird.

gosh, as I sit here I am getting way dizzy again. I think that I will see if I have any old iron pills from when I was pg. This is scaring me.