When to let your friends and family know you are pregnant?

Hi all, first time mom here. I’ve not told or shared about my pregnancy to anyone other than my husband. Im in my late 20s and a few of my friends have had their miscarriages and it made me very cautious. I am 7 weeks in and I still don’t feel comfortable telling anyone due to the fear of unsuccessful term. I was thinking of letting the news out only in 2nd trimester. Is it being unreasonable? Should I share with someone? #firstbaby