Sensitive boyfriend !!

My boyfriend gets emotional about everything! Like literally every conversation that has something to do with another guy he shuts down & gets emotional! It can be something simple as us discussing an old high school friend accomplishments & he gets really mad! He thinks I’m sleeping with EVERYBODY when I’m not! He think every guy wants me! He thinks my friends aren’t good enough for me! He down talks everybody and it’s annoying! He gets mad when my dad sends me money, he calls him a trick for looking out for me. He wasn’t like this at first, I just gave birth to his second child, it got worse once I got pregnant a second time. I’m not sure what’s wrong with him. Is it insecurity or what?