Hi Don and welcome to NT!
Knowing when, or if, one's PCS will resolve is the $64,000 question - and I wish I had an answer for you. The extent of recovery can be influenced by many factors including age, number of injuries, whether or not you lost conciousness, etc...
During the healing process, it's important not to do anything that might hinder your progress. Rest and good diet are essential. It's also important to stay away from alcohol. I have no doubt that members more knowledgeable than I will chime in with good advice on supplements and treatment options.
Understanding PCS is an important step in recovering from it. Some excellent sources for further reading include: the Brain Injury Association of America
www.biausa.org; www.tbiguide.com and our own TBI forum here on NT
http://neurotalk.psychcentral.com/forum92.html If reading gives you headaches, there are a number of excellent TBI videos on You Tube. (Who knew it wasn’t just idiots surfing on cars?)
People have made incredible recoveries from brain injury. For example, a woman who got a serious TBI from a fall in her teens is now a neurologist in Canada. Never give up!
Cheers