Insecurities

Ladies help pls... Ever since I've been pregnant I've been having fights with my bf and some days they are bad ( not physically though). Most of the times I am the root cause of the fights and you'll find that the fights are petty and childish too. His a good guy his been very supportive of the pregnancy but I tend to ruin everything. I am insecure coz I fell like his gonna leave me especially now that I don't work, I quit my job after the company was transferring me too many places and at that time I was already pregnant. What am I too do before I loose him?