I've felt awful for 2 weeks, and I don't know why.

Ever since December 23, 2011 I've been sick and I don't know why, I started throwing up and couldn't keep anything down for 5 days and whenever I stand I get dizzy, my heart starts beating fast my head feels like there's a heart in it and when I sit back down my heart beats really fast and it takes a while for me to calm down and to catch my breath and I can't stand for very long cause I get dizzy and weak and my ears go funny like when they're water logged. At first I thought it was the flu or food poisoning cause the only thing I ate that no body else did was a veggie burger, then I thought it was anemia cause I was having a heavy period so I've been taking iron pills, what could be wrong?

[Londres70]

No ER or physician's visit yet?  

I would recommend that ASAP.

Any possibility of pregnancy?