oohhh wow i am in exactly the same position. i have just lined up a position with an agency as a nurse.i am facing the same dilemna.i am only 3 weeks though so i have plenty of time before i start to show.my line of work though can be a bit physical and sometimes dangerous if i get an aggressive patient.i dont think i will be telling them that i am preg but as i grow larger i will so as to not be put with any such dangers.i guess i will let them know at about 16 weeks preg just before my bump starts to pop out.
nikki.