We thought my little son (3yrs) might have nodules because he was also very hoarse sounding. I kept thinking he had strep,we did a lot of cultures on him,like one every few weeks since i kept taking him to the pediatrician and that’s what Drs do when you bring in a kid that has a hoarse voice. Needless to say,the cultures were always negative(this went on from the end of the summer,till around early nov. When I finally had enough and took him to an ent. He looked with his very strong light that was strapped to his forehead and he said that my sons throat was coated in white as were his tonsils and there was no way a pediatrician could see that far down with just the Popsicle stick and his little light. He gave him strong antibiotics for 2 weeks and said we should see an improvement. We didn’t right away,but after day 8 or so,he was not so hoarse,then it went away totally. So maybe,you have a bad throat infection?
Also the ent had told me if he didn’t respond to the antibiotics,it’s probably a nodule and he would send him to a speech therapist who would teach him how to breathe and speak properly without straining his voice and vocal chords. But first he would have to scope him to make sure. I’m happy BH he got better without all this. But maybe you should check if it really is nodules.