29 weeks newly hired.

So I'm 29w +1 and just got a new job. Finances are tight and my work hadn't scheduled me since December 10th and with my husband out of work at the moment needed to get something. My question is when should I disclose that I'm pregnant? Right away? Or after a month of working or longer? I honestly dont know if I even want to go back to this specific job after giving birth just needed something for the time being to help with Bills. Please let me know what you have done or what your opinion on the matter is. I honestly didn't disclose it bc I didn't want to not get the job bc I really needed it.