What kind of charges can be placed against a women who sleeps with my husband comes to my home where we live?:
Although adultery may actually be against the law where you live, and although you may have a cause of action for alienation of affection, what you really have is mislaced anger.

This woman was not coming to your home.  She was invited to your home by your husband.  She was not making out with him.  Your husband was making out with her.  And she did not get pregnant.  Your husband got her pregnant.

This woman did nothing to you.  Your husband did.  Make sure to divorce him.  Get a good settlement, maintenance and child support. 

The best revenge is a life well lived.