Possibly pregnant

So there’s a huge possibility I may be pregnant. Well after speaking with my husband, he has changed his mind and no longer wants to have a child. I informed him that I may be pregnant and he stated he wouldn’t be happy if it’s positive. I’m so confused and have mixed emotions. I really want one more kid and we’ve always talked about it but now he’s backing out because he states he wants to live his life and go on vacations and we already have kids. I really want a boy since we have 2 girls already. Any advice?