One bedroom rental agreement?

So we moved in to a one bedroom apartment, my bf his young son (who at the time we only had 2 to 3 days a week but the landlord thought he was here full time) and myself. Since we moved in we had a baby and gained full custody of my stepson. Can we be evicted for having 4 ppl living here? My landlord asked me how many ppl live here now.... Im affraid to answer we cant afford to move right now we both were laid off and looking for work...... We live in santa clara cty california