13 weeks pregnant and still sick, i cant take it anymore!?

I've been sick every since I got pregnant and not much has changed since. I've been throwing up EVERY day and at one point I thought I was making a little progress but now it seems to be getting worse. My body feels so exhausted, my hearts always racing, is that normal? I'm extremely stressed and on the brink of depression. I don't feel excited anymore I just want this over. (I had to make a trip to the bathroom in the middle of typing this) :( Any advice?