Ask friends who divorced who they used for a lawyer.
Call Monday and ask for a free consultation with a lawyer who deals in divorce. Make appointments with more than one lawyer. Take copies of your financial records (income tax reports, mortgage payments, debts) and find out what your legal rights are.
I can't tell you what your rights are about your home. Each state may vary.
I was living in Georgia when I separated and divorced. My name was not on the mortgage. I took temporary possession of the marital home. I had no right to deny him access to the home. I had the right to call the cops if he showed up drunk.
Getting a free legal consultation does not obligate you to a divorce. It is a positive step you take to determine you legal rights and help you make healthy choices for yourself.