hi i was diagnosed with a pineal cyst on my brain a year ago all has been fine untill about 5 weeks ago when i got this awfull pain only on the left side of my head it hasnt gone for a day since it started i feel tired all the time i get blurred vision dizzyness and if i lay on my right side the preissure on the left is unbearable is this something to worry about i dont want to tell anyone incase its nothing id hate to waste peoples time