What should I do...?

Victoria

January of 2017. My fiance and I lost our baby at 8 weeks and 5 days. the baby didn't have a heartbeat. After ttc since then. I took a test after being late for my period. Which these last couple months isn't so uncommon...well it turned out postive! I'm pregnant. I'm so happy and yet I'm terrified. im terrified of breathing or walking...... My best friend is saying I shouldn't tell anyone until after my first trimester. But I don't want to hide my rainbow baby,but at the same time I don't want to jinx anything..... What should I Do?