Hi Starting - have just read all this thread, and really feel for you - I know how you feel right now, that numb, scared feeling.
I'm nearly a year down the line, following the breakup of a 22 yr marriage to a man 'who didn't love me anymore' and blamed everything on me. He was having an affair, of course he was, but he never admitted it, even though I begged him to. You feel helpless and hopeless and totally floored.
Here's what helped me:
Take back control - this seems impossible, but actually it is very easy. See a solicitor (I see you hope to today), asap, but if you can't, go to your local CAB office, just turn up and someone will see you. They will also be able to suggest good solicitors in your area - many do a free first hour session.
DO NOT (sorry for shouting, but I really mean this) SEE HIM.
Just don't. He will come out with a load of crap, which he has had time to prepare, you are feeling at your lowest - it will achieve nothing.
What I did, as well as rely on MN alot, for which I'm forever grateful, was go NO CONTACT. This is bloody hard, but actually got me through. You get some control back, you get breathing space, and you get time to go through all the array of emotions - it's a rollercoaster - but the anger will kick in soon, and believe me, again is good! Channel it into practical stuff.
He won't like it when you take control, he has conveniently made you out to be the nagging other half, moany and needy. When he sees that you're a strong independent woman, who can (and you can) cope on your own, he'll flounder. Let him. Let him stew in his juices.
Be strong, be kind to yourself, but please, don't contact him or see him. You owe him nothing, you owe yourself everything.
Be your own best friend, and lean on us. So many of us have been where you are, and got out the other side. We'll help you.