in-laws-_-

what do you do if your Boyfriend's dad and brother literally hates you and you are pregnant ! they hated me before this-_- I have no clue why. I'm a super nice person, I habe tried to have small talk and if i see them i say good morning. hi. good Afternoon. they ignore me?? and my boyfriend doesn't tell them anything at all. I'm pregnant I don't want to be stressed?