So I'm 6 months pregnant and the reason I'm looking for work is my temporary job ended two months ago and it's been difficult finding work so I've had many interviews and I finally got a job that i definitely see myself long term at as a career and I feel being pregnant just kinda ruined my chances I feel bad saying that but anyways I got hired on the spot of my interview and start tomorrow but I'm not sure when I should tell them also I'm not looking for paid leave I don't care about that as long as I get time off to recover since I want to go back after that. Should I tell them before they train me or within a couple days I'm so stressed out but I couldn't help the way my life was laid out to me and advice on when to tell them will be great.

P.s I'm not really showing either you can't even tell I'm pregnant if I'm wearing a slightly flowy shirt

Update: I told my employer two days after starting and they completely took me off schedule so I'm not fired I'm just not on the schedule at all and they said they can't put me back on due to the fact that it would be to complicated to let all the other employees know the new schedule keep in mind there are only four other employees.