Ways to tell your job

Sabrina
How would you tell you're new job your pregnant? I was thinking about just waiting till my appointment (that Iv had scheduled for over a month) because I'll have to come in late... Should I tell them then or before or not for a while? I'm 19 weeks and I'm showing some, but I already kinda had a belly so you can't tell if I wear a sweat shirt unless you know.