Try not to worry my sisters first little boy had excess fluid on the brain. When he was born they found out it was because he had just a small amount of missing brain matter. I know that sounds horrible and I'm not trying to scare you. I'm telling you because he had absolute no problems. He is a happy healthy 7 year old with no learning problems at all. Hang in there some times things sound horrible but turn out just fine.
I'm so sorry. I know that worry, but try to stay positive. I had to have another scan of the brain too. The baby was just a stinker and moving so much they couldn't get a reading. I pray that is all that it is. It sounds like your plate is full. Keep us posted