Can I Break My Lease If I Lost My Job And Am Single Mother Of Three And Just CANNOT Afford To Pay My Rent. . .medical Reasons Which Employer Will Not Accommodate?

Well you have a genuine problem here. Legally you are in a position to break your lease, as you can not pay your rent. Just follow the legal procedure for vacating the house. Send an official notice to your landlord, citing the reason for vacating the house and give him some days and an offer of inspection of the house.