Can you tell me what illness I have?

Sounds a bit like Mononucleosis ( Which is 'Mono' ) And please take a bit of caution because these people are not doctors on here .. Like the one that said "Yeast Infection" ( Medical name for it is Candidiasis ) You don't even have any of the symptoms for it.. I highly recommend you ask your mom to make an appointment with your general medical care giver and then he/she will properly diagnose it take care.