jessl, hope you are very much better now, as Krispy said, do not think too much as now you are fine.
Actually, I kept seeing you all wrote about going for oscar scan, wat's that? Oscar award? I only know I go for full detail scan at my gynae's adjoining Lab and two blood tests at and after 16th month, that's all.
peachbloom, welcome and congrats to you. I am also 7 weeks this week. In fact, it really depends when you want to announce. Maybe it will be good to just let a few close ones know about your good news. In terms of informing office, it also depends. If your workload is very heavy and you really feel tired, you can just let closest colleague(s) or superior knows. I just broke my news to mgr last Tues, just telling him next June we will have to get a temp gal, and he got the idea. At least he knows, any additional work, he will know that he cannot 'taiji' to me now and near due date, heehee.