How can you spend 2 years with someone and get pregnant and then one day they just decide you don't…

How can you spend 2 years with someone and get pregnant and then one day they just decide you don't mean shit to them so they treat you like you don't exist and don't spend time with you anymore? They call you clingy and crazy when you're pregnant so that just makes things worse.. I hate you for ever saying that you wanted a future with me because somehow I thought that everything would be okay. I'm going to love our daughter but I don't expect you to do anything other than let her down throughout her life. You can't do anything for me. You only think of yourself. You say it's a waste of money getting a 4d ultrasound and you won't go with me so I have to go alone. I don't understand life or why I love you :(