Sounds a lot like chronic fatigue syndrom. However, lymes decease, epstein barr, and lupus all have similar symptoms. The best medicine for cfs is to learn all you can about it so that you can have as close to normal a life as you had. I was also a very active person and all of a sudden could not do anything. I learned to sleep during the day if I was going out at night, etc..... Also, some doctors prescribe vitamins by injection for cfs. Find a doctor who is knowledgeable about cfs and the other deceases I mentioned. There is a blood test also. Good luck and God Bless.