Should I keep my pregnancy or abort it? It was unplanned

My husband wants a divorce if I refuse to abort the baby. It was an unplanned pregnancy..this is the second child I will be having.what shall I do? I intend to give up for adoption..even I divorce him, I don't think I can handle 2 kids if I am going to work and take care of them at the same time..the whole household is all on me..now..what shall I do? I do not even have any support network at all..not even my own parents .