How can I tell if my Iguana has a broken neck. URGENT!!!!!!?

My iguana has an OBVIOUS problem with it's head, and it's not swelling. I had a highly unexpected seizure and it's not eating I think it's too cold, but it well only move it's head to the left and not the right and won't lay in a straight line he curls up and makes an O, his tail is in his face. I do not think my parents will get him to the vet soon enough and it's two hours before they get home for my to ask them who are vet is anyway. I think it might be because of his fungus, he has a lot of it and I didn't know about the 100% proper care for the iguana I just fed it the right diet and gave it a big cage. I didn't know about a UVB till two weeks ago and he hasn't been getting enough heat because hes in a medium sized to layer dog cage with screen around which I am now planning to change to plexi gl. (whenever I can afford it I get 5$ a week for allowance) If birdmeat (my iguana) dies it'll just be a learning moment for me. He is two years old and I have only had him for about 6 months. He wasn't tame but I have tamed him up little by little. I gave him a bath in warm water (90 degrees, I took a thermometer to it) and that lightened him up. I am just not sure how else I could help it. Right now this second it's in it's cage on it's heating pad wrapped in a cloth.