My question involves divorce in the State of: Nevada

My husband left a week ago, drained accounts, and left us behind on months of bills and now I am forced to leave our home. I am 6 mo. pregnant with our 1st, my fourth. It was a planned pregnancy.

He wants an annulment. Can he file? We have a child coming in Oct and now we have debts from pregnancy medical bills.

Is it possible to file for divorce now, or do I have to wait on custody and visitation until my son is born? If not, what can I do until I am able to file?