Unplanned😔

So I just found out two days ago I'm pregnant with my 3rd child and I'm about 4 weeks let's just say it was not planed between my husband and I and we were comfortable with just having two kids and we were done we have a 4 year old and a 1 year old. I'm very emotional and not happy at the moment. I'm very anxious and scarred how to handle 3 kids I'm a stay home mom and I'm nervous for my husband he works so hard already. Can you ladies please give me some encouragement.