Everything has changed

I can't do this. Since I got pregnant everything has fallen apart an the weird thing is we planned this. We tried for months almost a year. I can't handle the stress my own family causes me an all me an my husband do is fight. We fight because I hurt an don't want to have sex or I'm not as "lovable" as I was before. I'm emotional an annoyed with almost everything. He walked out tonight because me an my mom were arguing(we were visiting for the weekend). I don't want to bring this baby into this world knowing everything is so messed up. No one is happy an I feel this baby really isn't wanted by anyone else. I can't be a mother on my own. If my husband really doesn't want this baby I'm not gonna trap him with it. I just give up. This baby was our miracle an now our lives are a nightmare. How did this even happen?