Untreated yeast infection complications?

I had external symtoms of yeast infection for a while (i mean a really long while..:D ) and suddenly 3-4 days ago, the external itching and burning while urination has stopped and i have abdominal pains, joint pains, frequent headaches (mild) and these sort of things. What is going on? I have appointment with gyno tomorrow morning. Will it get any worse by then? Is there any fatality? Plz help..Im all confused..:(