Question about renting an apartment ❓

Will a landlord rent a 1 bedroom to me (6 months pregnant), my boyfriend and our 3 year old? Or is it too many people? We're tight on money at the moment. The only way we could afford a 2 or 3 bedroom is if we move to the city. Which is very run down and just not a safe place at all.. This would be very temporary. We would give the kids the bedroom and make the living room into our room. Any answers are appreciated. Thanks in advance.