Telling My Work

Dana
I recently just got a new job almost the same week I found out I was pregnant at 3 weeks. I am now 18w4d and need to tell my boss before the belly pops too much. I am so scared I am going to lose my job and not have money for my family. Does anyone have any advice!?!? I am part time at a large bank so I don't have any job security. HELP!