Me and my husband have joint name in the house .

I am hindu punjabi married to hindu punjabi boy in gurudwara in 1996. We have a son he is 18. My husband is having affair. We had fights and he beaten me because of this i staying with my mother along with my son. My husband is staying in our house which is jointly owned by me and him . I am the first owner. I was given share from my father's property. So we could purchase the house. I want to sell the house for which he is not agreeing what right do i have because. I am working as receptionist and my son is still studying. He never gave me money for my son.he just gave 15000 (jan 10000 and March 5000) uptil now.i had applied for mutual divorce in july 2015 but later we withdraw it because he didn't wanted to sell the house the termsand conditions mentioned in the petition was that we sell the house and take half share each after paying bank loan 10 lac and loan taken from my mother 2.5 lac but now he says he doesn't want to sell. Please guide me all this thing are affecting myson