There are no rules that govern the right time to tell your boss that you are pregnant. Obviously, you have to tell him or her eventually, but the timing is up to you.
Some women want to wait until they are through the first trimester before sharing the news, while others want to get it out in the open right away. If you are thinking about notifying your employer earlier, you should know the pros and cons.
Pros
According to CNN, informing your boss of your pregnancy early on allows you to start having the conversation about plans for your maternity leave and whatever other accommodations may be necessary. Having the plans in place well before the time comes can help give both you and your boss peace of mind.
Sharing news of your pregnancy early on can help build trust with your boss and your co-workers. While the timing of the disclosure is your decision, some may feel hurt that you did not come to them with the news sooner, as though you were hiding something. On the other hand, if you notify your boss and co-workers before you “have to,” they may appreciate your transparency.
Cons
If the worst should happen and you have a miscarriage, it can be a painful experience both physically and emotionally. If you do not feel that you can have that discussion with your boss, you may want to wait until after the first trimester to inform your boss of your pregnancy.
On the other hand, if your boss knows about your pregnancy, he or she may be more sympathetic if you tell him or her about your miscarriage in the event of that worst-case scenario. Ultimately, when you notify your boss depends on what you feel comfortable with.