husband wants to go to his friends bachelor party

we are moving at the end of the month. we haven't even started packing. my husband gets a phone call informing about a bachelors party in Vegas. he is a little sad he can't go. btw I let him go to one while I was pregnant. we had a huge fight about it. I'm just so disappointed. I don't trust him. he was married before and he told me after we were together that he tried to cheat on his exwife during his trip to Vegas. I just don't want to be with any man now. we have a child together, I left my home country for his empty promises, I slave for him everyday, I satisfy his physical needs and fantasies daily during pregnancy recovering from childbirth (he complains if I don't do anything if I don't do anything for him for 2 days). I'm just done. I can be unhappy without a man. my parents didn't sacrifice this much so I could be unappreciated by some dude.