Does it make me a bad person?

Does it make me a bad person for being stressed about watching my baby’s fathers son alone when he is away for days at a time? I’m 27 weeks and 4 days pregnant and I have only eaten once today and have gotten 2 hours of sleep. Does it make me a bad person for not being able to take his son for 9 months while he deploys? He’s really mad at me now because I was honest and told him I don’t think I can handle two kids while he’s deployed. Am I a bad person for saying I can’t do it? The baby’s father and I are not together. He also is deploying in October.