Wow! I commend you for not getting an abortion and still having the courage to still go on. I can't believe the nerve of your husband to leave you with four kids. I would advise you to get medical treatment as soon as posible just to make sure everything is going o.k. with the baby. I'm 51/2 months pregnant and now a days they have so many test that they have the mother take. Just take care and may God bless you!