Go down to the nearest hospital immediately and INSIST on a CT scan.
It can be any one of 3 things all of which require IMMEDIATE attention. A CT scan is definitive and will pinpoint the problem immediately. Here in the USA you would have been admitted into the hospital ASAP with out any delay. Any hospital that sent you home with these sypmtoms would be liable big time for mal-practice.

                                             SOL ZELLER