Welcome, Barbara! I'm in my 30+ year of MG, though mine is mild compared to what you are going through. Don't feel bad about venting, we all need a shoulder to cry on and a listening ear. Sounds like you've had more than your share of problems. Too bad your ex didn't believe in the "in sickness or in health" part of his vows! That was just one extra blow you didn't need.
Come back any time to vent, it's a very healthy to thing to do, and you know most people here will be able to totally sympathize as well as empathize. For many of us it's a been there done that situation. Though probably not quite as bad as what you've been through.