Coworker miscarried & and i'm pregnant too

I am 9wks along but have not told anyone... My coworker told me she was pregnant a week ago... I was waiting til i went to my first appointment before i told anyone so i didnt tell her i was expecting also. Well she twxted me this morning telling me she was at the ER and they told her she miscarried. Now i feel like i have to be even more hesitant to bring up my pregnancy at work. We work side by side and i would hate to bring her even more sadness. i have no idea how to handle this. Not to mention most people wont even know about her pregnancy/ miscarriage so its not like you ask them to be respectful around her (especially since pregnancy is a topic of conversation that comes up frequently when someone is pregnant in an office full of women).