What's going on

I hate doctors they can never seem to figure out what is wrong so I don't like to go. For a few months (mostly sense Feb.) I have been having weird vision issues. Whenever I get up my vision goes blurry and dark. The first five to ten steps I take are completely blind. I believed this was happening because I was dehydrated, which was totally possible I don't drink enough water. Almost two weeks ago I noticed it getting worse my vision would blur while looking at my computer screen or changing lights. I finally decided this was not because I was dehydrated and went to see the eye doctor. He took one look at my optic nerve and set me up with a CT Scan. I have to much spinal fluid in the brain causing lots of pressure, so much in fact that my optic nerve is swollen and has hemorrhaged a couple of times. This has also been effecting my ears. There wasn't anything on the CT Scan so we can be assured it is not a brain tumor. Great news I know. Know I have to go in for a lumbar puncture or Spinal Tap. I know I'm going to be fine, but the words spinal tap scare the crap out of me. The problem is that I completely asked for this. I was telling my friend how blessed I was and that I hadn't ever had to go through any really difficult trails so here we are. I still know how blessed I am and I know that my Heavenly Father is looking out for me. I needed this and will learn a lot from it all.