Should I tell I'm pregnant at a job interview?

Jen

My husband received some devastating news at work today which will result in a significant pay cut. We're already struggling to get by so our only choice is for me to return to work. (I've been home with our 3 year old since she was 8 months).

Should I tell prospective employers of my pregnancy at interviews? I'd feel bad telling them after I'm hired that, "oh, by the way, I need July and August off".

Thanks for your advice!