Feeling definitely odd

So what's wrong with me? For three days I've felt like I'm just getting over a really bad case of the flu. You know how it is, when you've had a few days of ***TMI alert*** diarrhea and vomiting, and you're over the sick feeling but still all washed out? Yeah, that's how I feel.

I also felt similar to this a couple of years ago when I had that stomach bleed and needed 4 pints of blood and spent 4 days in the hospital, but there's no anemia or other evidence of internal bleeding (and believe me, I've kept an eye on things). If I bend over or stoop down and stand up too quickly, I start to black out. I feel like I can't get a breath deep enough, but I don't have any trouble breathing. Nothing hurts. I don't feel sick.

I just know that Something. Isn't. Right.

I've made a doctor's appointment for this afternoon (luckily she had a cancellation; I hate having a doctor who is so overbooked that you can't get an appointment for days even when you have a urinary tract infection) (I also hate having to wait a couple of hours because she's running behind, and she's ALWAYS running behind) and I hope to find out just what's going on.