feeling guilty

Michelle
There are two other ladies on my fb friends that are due in September. Another one is my cousins wife and she was due sometime this winter or late fall. 
Every Saturday I update with a belly pic and I enjoy sharing my little milestones with my pregnancy. This is my first. But I don't for some reason see everyone's stories in order on my thing and I don't normally scroll through it. 
So far...sometime early May, my cousins wife had a miscarriage.  This is their second loss. :(
And tonight I saw another update from last week and she was a week ahead of me, she had a stillborn at 25 weeks. Not sure why. They seemed so confused but it unfortunately happened. 
I know these things are very unlikely to happen to anyone but it does give me such a heartache and fear of something happening. The third girl is having complications with her pregnancy too and she's a week ahead of me as well. 
And here I am unknowingly posting things without realizing the hardships these girls are going through. Maybe I'm just being super sensitive but should I be?