I know I am only 7 weeks but I have been worried about this almost since the moment I got my bfp.
I guess I am nervous because I am a remote employee. I fly out to different clients every week and see my boss once or twice a year so it is not the same easy camraderie you would feel in an office even though I have been working there for almost 5 years.
(I do really like my boss and he likes me but this is a high pressure industry so the demands are high and sometimes inflexible)
Also, the dr wants me to keep flying to a minimum but I can't really do that because I can't ask for those kinds of concessions this early on. My company will ground me at around 32 weeks so I don't want to use up all the goodwill right now especially when I'm not even out of the first trimester. kwim?
I'm thinking I will tell him around week 15 or 16. is that too late? I would like to announce to everyone by 12 weeks but the work thing is holding me back.
Am I overthinking this? I'm overthinking this...
Ahhhh, maybe I just needed to get this off my chest. :)
Anyway, when do you think you will tell and why?

I work in a high school and will need a sub for almost 2 months.  Our u/s is on monday and i'll be around 8 weeks (I measure 7w5d but my last u/s had me measuring further along so I could be 8w today).  If everything looks good I plan on telling my principal either sometime next week or the following week when i'm around 9.5 weeks.  For me it's hard to keep a secret especially when I feel so terrible, I feel like i'm waddling around due to bloat and back pain, and I swear I have a bigger gut...so i'd like to just get it off of my shoulders.  We'll see though.  I need to talk to DH about it since we work at the same school. 

Why do you want to wait until week 15 or 16?  I know for me i'd like my boss to know sooner than later in case something happens. 

I'm not sure why I want to wait that long. I guess I am afraid something will happen with the pregnancy but also because I am paranoid that they will start to phase me out. Most people with my job do not have small children because it requires so much travel and I don't want them to feel like I won't come back to my company after maternity leave and then have them start preparing now (it takes many months to train someone). I may not go back and I know legally they can't "phase me out" but I don't want my career to come to a screeching halt before it has to.
On the other hand, what will be will be. My DH says just to tell whenever I feel like I want to tell everyone besides close family and friends and just see what happens.
You are probably right too in that they should know in case anything comes up.
We'll see...

My working situation is totally different as my current visa situation is tricky so I don't have a proper job. All I do is help DH's mom with her business......so we told them right away being family and all!

You on the other hand have a tough one. If I were you I'd probably feel the way you do and want to wait a while before spilling the beans. Especially as you're worried they might want to phase you out. I would just play it by ear though and just see how you go. As you get further along and and start to feel more secure with the pregnancy your feelings may change. For now though I would keep it to yourself and just see what happens. Maybe at 12 weeks you wont be able to keep it in anymore......Or the perfect conversation with your boss might arrise and you'll just tell him out of the blue before then.....or you will feel the same and not tell until 16 weeks.....who knows!

My boss is the second person I told. I was going to a RE and had to get a lot of bloodwork and I didnt want him guessing what I was doing. Plus he has had losses of his own and know how stressful this is so I had some support :)

I think I'll tell my boss when I get out of the first tri. I might even tell her sooner because I'll need to leave work early for any appointments and I used up all my personal time!! :)

I told the day I found out - I was debating on waiting but I figured if I was feeling or getting sick everyone would know :) Plus, everyone knew it was only a matter of time before I got pregnant.  Also, DH sent me flowers so everyone was wondering why.