welcome k
sounds like you may have a leak, as I do, rest is so important after a head injury, here,s a link to an info site
http://www.cerebrospinalfluidresearc.../1/10#IDAE4UID
most leaks seal them selfs, within 10 days, there is a risk of meningitis also, so limit risk by not catching colds ect
any help i can give pm me or post in the sub forum