Ooo... lightheaded

So today I went into work like any other day. I don't know what it was, but I started feeling really lightheaded. Of course, right after I started feeling like this, a crowd of people came in. I was on the front counter taking orders. Anyway, I was a few people away from completely taking everyone's order when everything started going black. You know when you get those dots in front of everything? Yeah, that was happening. And my stomach was feeling real bad, but I didn't want to throw up infront, or faint, of customers. I only had one order left when everything went black even more, I thought I could make it through, but they were two old men and I couldn't hear/understand them (at least not quick enough to take care of myself after them). I yelled for a manager and ran out of there to the restroom as quickly as I could.
Anyway, I'm at home now, still feeling ew-yuckie. My head is full of cotton, with thorns bumping it ever so often for a headache. They say it's common, especially in the second trimester. But frankly, this is worse than morning sickness. I can't do anything. Anyway, feet up, eating and drinking fluids... trying to get rid of these feelings.
Here's a little info (from www.whattoexpect.com) to help ease your mind. It's a perfectly normal thing, just not a nice thing:

Pregnancy Symptoms & Solutions

Faintness, Dizziness, Light-headedness

If you’ve always wanted to perfect your swoon, pregnancy may be your best chance. But if you’d rather keep your feet on the ground, here’s what you’ll need to know.

What it is: A disorienting feeling of unsteadiness (vertigo) can make expectant moms feel as if they’re about to fall or faint (and sometimes they do!).

What causes it: Early in pregnancy, light-headedness is likely due to the fact that your body isn’t yet producing enough blood to fill a rapidly expanding circulatory system. (The good news: Your body is gearing up to meet the needs of two bodies instead of one.)

In the second trimester, your growing (and growing!) uterus may put pressure on your blood vessels, which reduces blood flow to your brain, sometimes making your head spin. (By the way, that reduced blood flow is probably the reason you often forget your own name these days.) You might also feel dizzy if your blood sugar drops or you become dehydrated.

Another possible source of light-headedness is spending too much time in a hot or stuffy room, especially if you’re wearing clothes that are too tight or too warm. Remember, your body is a baby-making oven, generating plenty of its own heat right now.

What you need to know about it: Dizziness and light-headedness are common during pregnancy, but if they persist, or if you actually faint, put in a call to your practitioner just to make sure everything’s okay.

And keep in mind that no matter how "normal" it is to feel dizzy when you’re pregnant, that doesn’t mean you should ignore the feeling. If you’re feeling light-headed, use common sense: no driving, working out, or handling anything dangerous. If you start to feel especially woozy, sit down immediately so you don’t wind up falling and hurting yourself or your baby.

What to do about it: You can stop a dizzy spell in its tracks by lying down as soon as you start to feel light-headed. Elevate your feet to increase blood flow to your brain. Second best: Sit down and bend as far forward as you can, putting your head between your knees, if possible. If there’s no place to lie down or sit, kneel on one knee and bend forward as if you were tying your shoe until the spell passes. And if you need help, don’t be shy about asking.

To keep a spell from starting in the first place:

• Don’t get up too quickly from a sitting or prone position.
• Eat protein at every meal to maintain stable blood-sugar levels.
• Eat several small meals throughout the day.
• Carry healthy snacks with you for a quick blood-sugar boost. Good options: a box of raisins, a piece of fruit, or a couple of whole-wheat crackers.
• Drink at least eight glasses of water a day; more if it’s hot or you’re working out.
• Dress in easy-to-shed layers in case you start feeling overheated.
• Don’t wear tight-fitting clothes, scarves, or hats.

If dizziness or light-headedness persists, tell your practitioner how you’re feeling at your next visit. But if you actually pass out, call ASAP (once you come to, of course).