Metal harassment by father in law

Basically I was a Christian girl. Last year got married to muslim boy. We were in love for past few years. I have converted to muslim religion. My complaint is against my father in law. He is mentally torturing me. He used to spread small issues in home every where outside. I am a working women. I am mentally disturbed due to his behavior. When I was pregnant, when I took some things to cook and eat he was telling like I have finished all the things. I am doing all work in home. Even after eating food, he is telling outside that I am not giving anything to him. And 3-4 times when I breastfeeding, he used to come to the room and tell accidently came. We have a 3 floor house. Me and my husband stays in upper floor. Others are in first floor. I used to keep all my things upstairs. Recently I kept my menstrual pads in waste bins near my room. The pads are covered with paper. Accidentally my father in law saw this when he come to upstairs. What he did is, he told bad words about me to my mother in law, neighbors and brother in law. I am really tired of his behavior. Each and every time he is making such kind of issues and spread outside. As a woman I feel very disturbed by this.