I waited until I was 13 weeks to tell my boss. I was starting to show and had to say something. I just spoke with him privately and told him. Have your plan in place, like are you planning to come back after maternity leave or are you quitting? How long will maternity leave be? Stuff like that.
I still wouldn't tell them til later on. Definitely not this early. And give them your scheduled c section date, date you're leaving and approximately plan to return
Not until you're way further along. I wrote a letter stating my due date and when I planned on going on maternity leave. And for approximately how long if delivery was normal.