At what age did you get this surgery done? It would be best for you to go for counseling with your urologist or sex specialist as people who undergo hypospadias have trouble with an active sex life and even masturbation.
Please mention site of ‘chaale’. If they are inside of oral cavity, then they are called oral ulcers and treatment is daily dose of vitamin b12 and local application of smyle gel. Also, avoid spicy food. Please see a dentist in case they bleed or your gums bleed.