Throat Infection Help!?

About 30 days ago i was sick and went to the doctors. i found out i had a sinus infection nd they put me on Amoxicillin 500 mg. I took it for a while but my throat started hurting and i couldn't finnish it. it got so bad that i took a flash light and looked at my throat. It was covered in white stuff. i figured it was tonsillitis, so i went to the doctor. They told me i had some type of infection(kind of like a staph infection from the medicin i was taking) in my throat and they put me on Fluconazole 100 mg (2x a day) After a while the infection went away but i wasn't finished with my meds. like the next day i lost my medicine (i had 3 pills left). i didn't figure it would matter, but my throat is starting to feel that way again and i looked at my throat and it looks like the infection is starting to develope again and i started to finnish my mmedicine i now have one more pill. i have been to the doctor a lot so my mom dosent have much money to spare. what should i do?