I went to the doctor and they prescribed me Fluconazole for a yeast infection. They gave me two 150mg. I took one the day I got the prescription and it said that if the symptoms haven't disappeared fully, then to take the second tablet in. 72 houes if needed. It is not Sunday night, I took the first pill Wednesday in the late afternoon. I was just curious as fo if it's okay to still take it even though its been more then 72 hours.