When to tell manager , I’m pregnant

Mary

I’ve been at my job for 6.5 years, this is my second pregnancy at this employer. I was pregnant with my first in 2017.

I’m experiencing nausea and morning sickness this time around. It would be so helpful if my boss knew I was pregnant so he could understand why I’m a little later in the AM or need time off.

Is it too early to tell? Pros? Cons?

I’m 4 weeks along