Working while pregnant?

My husband is really stressing out about money right now. We are moving, he has to go for 2 month training and I'm unemployed and 10 weeks with our first. I just need a little income for the moment.  But I don't know if I'll even get hired, do I need to tell them off the bat that I'm pregnant? Do I wait? I will most likely apply like cashier at a grocery store or something along those lines. I dropped out of high school and I'm working on my GED, so not tons of options for me. Now I'm feeling stressed ?