They're all correct I'm afraid...your head gasket has indeed announced that it is going terminal on you. Stop using it and get it booked into a local garage soonest. Gladys ( my 1999 model) recently became thirsty and began consuming her water rather than recycling it around her engine. Examination at the dealership from where I purchased her confirmed that the head gasket had indeed gone.
Go through the various postings on this site relating to this issue and bring yourself up to speed on what is required, then take said knowledge to the garage with you and 'casually' let them know that you know what's required.
Good luck.