For the last 2 months, i've been feeling really thirsty tiredness skin and sweat smelling sweet?

Many possibilities: Hi. You should see your doctor. We out here in internet-land can't get enough information. Almost any/every disease makes you tired, but most tired people don't have a disease. Diabetes can make you drink more, in which case you'd also pee more. I have no idea about sweet smelling sweat (except maybe your nose doesn't work!). ;-) I suggest you see your doctor. Good luck!