Do i have vocal cord nodules?

whenever i get done singing a strenuous song, my vocal chords kind of ache, and there's always a lot of air and i'm really hoarse. But it goes away after about 2 hours, and i'm fine again. i am a hypochondriac, so i don't know if i'm imaging it or not, but i feel like i have lumps in my throat cuz it's hard to swallow. i don't know. what do you think?