I really feel very annoyed went my mum always tell my Son to don't go near my Husband and always tell me that she doesn't allow me to have 2nd child with my Husband just because she don't like him..

She is not the wife of your husband, and she have no right over your decision whether you and your husband want a second child or not. I think you should tell your mum that some things are not to be said to a child who is so innocent.