what does your husband think about you returning to work? Make sure you are in agreement on this first.
If it is just a matter of getting out of the house and being around other adults, arrange for some activities with the kids, get involved in what the kids are doing.. soccer, girl scouts or whatever.. you will surely meet adults that way. And get out on dates with your husband! Find a reliable sitter for the kids when you want to go out so you can be comfortable as you go out.
or perhaps you can find something part time or something like selling Avon that can be done partly out of the house but also get you out of the house to see people.. you might be surprised at some of the friendships you can gain from this.
get back into or find a hobby you can get into .. jewelry making, scrapbooking or what have you....
join a health club....
work with your husband on what you could do that would work with your schedules, yet not neglect him or your responsibilities at home.... if he agrees that you need to get out.. then you can work something out.
best wishes.
JG