Struggling with Mental harrassment by father

Hi I am Mrunali. i am 7 months pregnant lady who currently stays with my mom's side family.. my mom passed away due to heart attack almost 3 yrs back. i don't have any siblings.. after my mother's death my father practically forced me to sell some of our property to his brothers son. now he is asking me to back out from that deal just bcx he wanted more money now. there is no paperwork happened yet but i have taken some amount from my cousin for my treatment last year now my father is harrassing me for more money. even if i don't visit him or didn't contacted him he comes to my mom's side family's place and verbally abuse me. i don't know what to do now because due to this stress i almost lost my baby and dr asked me to not to take any stress and take proper rest. even my father knows my situation still he is causing me stress making me feel suicidal. i am very much worried for my baby. my husband works with tour company and he most of the time is on tours. What should I do now?