Headaches

I have been having headaches lately, and they are very painful. I've seen my doctor on and off about this, as no tylenol, ibuprofen, or even prescription stuff seems to touch these headaches. I actually started to get one yesterday, had a difficult night's sleep, and when I woke up I was nauseous. I tried to go to work but felt as though I would throw up as soon as I got into the car. Urgh! I hate feeling this way. I don't want to miss work over a headache, but when the only thing I can do without throwing up is lay completely still on the couch, I don't really have a choice.

Anyway, as I said, I've seen my doctor about this and we finally decided that I'm going to have an MRI to make sure it's nothing serious. So next Monday I get to go into a giant magnet. So if you think of it, you can pray for me... currently I'd just like to be not in constant pain. And I'd like to find out that this is nothing serious, but also I'd like to know what is causing them.