Adelt, you must do what you have to for your grey and if that means traveling some distance to get him the help he needs then you must do it, your grey's life depends on it. If you aren't a vet then do not self treat your bird as you could do more harm than good.
You need to consult an avian vet now ASAP for birds hide illnesses until they no longer can, time is of the essence and I hope your grey is going to be ok, please let us know what you find out. I will keep your grey in my thoughts and prayers.