First pregnancy

So this may be normal for some people but I just wanted to see what everyone else says. I want to be so happy about my pregnancy but I feel like I shouldn’t be? I can’t show my emotions with certain people around. It has been a weird few months hence everything that has happened but I was so excited when I found out, I wasn’t talking to my boyfriend at the time but I told him the day after I found out, I called my sister and she kind of bursted my bubble. She wasn’t happy about it so I feel like that on top of everything else happening is making it hard for me to be happy about it? Help...