What's wrong with me ?

I'm 17 weeks pregnant with our first baby. I've been getting emotional a lot lately crying over littlest things or nothing. Last night I cried to sleep for no reason. I even cried watching the new IT movie I love scary movies. I wasn't randomly crying I only cried at the clown attacking the kids or the bullies being mean to the kids but other than that it don't usually bother me. Anything that has to do with kids or animals makes me cry right now. I even cried watching Pet Cemetery that's my favorite scary movie that and The Shining and Helter Skelter which really made me cry. I don't like IT that much but my friends wanted to see that. I cried yesterday when I read on Facebook one of my friends shared the news of a newborn baby dying after a family member or someone kissed it because of a virus they had. Just to be safe I'm not letting anyone or my wife kiss our son when he is born I'm not loosing him to that. One of my friends was talking about yesterday that someone ran over a beaver I didn't even see it but it made me cry only to hear that. I'll be really sad around Christmas time because last year on Christmas Eve there was a little girl who was killed in a car crash a long with her parents they were on their way to a Christmas party but they never made it they were almost there. They were from our state I didn't know them or the kid but I feel sad for them. That broke my heart when I heard that I couldn't get over it for months even though I didn't know the family it's sad when a child dies especially on Christmas. My friends were posting stuff all over Facebook of it for days. The scary thing is they weren't to far from my wife's grandma's house. About an hour away. I don't understand why I'm crying so much about everything. Is it normal ? What's going on ?