Got my voice back but im about to lose it!!!!?

Okay earlier today i lost it n i got it lke in second period or so thankfully!! So i was fine n my throat hurt a little n i had to sing well thats not really gnna help. I coudl talk all day n i hav. But tomorrow i lke seriously need my voice.... My throat hurts lke im sick but idk.... Anyways please how can i keep it from going away!!