Baby daddy problems

My baby daddy’s new girlfriend he had for a couple of weeks doesnt want me around his house. I am 5 months pregnant and this is both of ours first kid. I told him she cant come to the gender reveal so he doesnt want to come anymore. I am depressed because i never thought my life would be like this. I cry whenever i think about the situation. Does it get easy? And whatever she says he does because she lives with him now.