I'm 18 weeks pregnant with my first baby and yet to tell my work about it. I do want to let them know soon so that they can plan for my absence (I'm the only person in my role so will need replacing) but find myself putting it off, I think because a) I've never done this before and b) I feel conscious that of course it will inconvenience them for me to be away! I know it's completely my right and my boss is very nice so no reason to think she will be funny about it; my workplace has a good maternity policy, too. I'm on a fixed term contract (of 3 years) which I'm hoping to have extended but that hasn't yet been confirmed (currently would end 6 months after I'm back from maternity leave) and also my manager is new in post currently covering her old role as well as new one (she's a coworker who was promoted). So those factors are probably making me more reticent about it. But really none of that matters and the sooner I tell her the better it is for getting things organised!
Anyway she works remotely most of the time so usually we meet online. Would you email her the news (so she can process it before we meet) or ask for a meeting and tell her "in person"? I think once I decide that I can push myself to do it this week!