1) your best course of action is to file for annulment of marriage on grounds of fraud in Gadag karntaka within period of one year of marriage
2) mention that husband suppressed material facts that he is highly diabetic , has thyroid problems and impotent
3) divorce by mutual consent is valid in India
4)you have to wait for expiry of one year before filing petition for divorce
5) case for cheating under section 420 of IPC can be filed in Gadag Karnataka and compensation can be complained against the husband and in laws