Depresión during pregnancy

Hi guys I’m currently 19 weeks pregnant with baby number four . I have 3 daughters Ages 6,5,and 2 . I want to explain because I really need to vent with someone. In September we found out we were expecting baby number 4 . My husband and I were to excited, at the end of September my mother in law moved in with us with her adopted kids . I stared school in October than my father in law need it a place to stay too we get him a place as well. During that period of time it was very overwhelming I don’t know how I pass my classes tbh. She moved out by the end of October and only my father in law remind . Their drama is being consuming us . We have let him borrow money . Our financial have been to the roof because of helping them . Every day is something. Sometimes we take the kids in because we don’t want them to stay home alone . Now my husband and I had been distance . All the joy that I have for baby I don’t feel it anymore. All I do is cry , stress and worry because all of this . Im supper mad and depress because all of this. This is my last baby and my experience had been an nightmare. Is not fair for this baby she’s very well wanted .