"Showing" in Pregnancy

Eitak82

H and I are planning on TTC this month! The issue is that we are also moving and as I teacher, I have to find a job this summer for next school year. I don't want to be visibly pregnant when looking for a job as I feel it would strongly impede my chances of securing a teaching position.

I know it varies from person to person, but is there any rule of thumb as to when you'll start "showing" pregnancy (not just looking bloated or "chubby")?