I admire you so much for standing up to your parents and being honest about this. Have you also spoken in depth to your husband?
I was also abused in the most awful of circumstances over a number of years as a child. It is singly the most devastating event that has happened to me. Years of drinking to numb the pain just buried it. I'm not able to talk about it even now to anyone, even those closest to me. I've posted more on SR than I've ever had the courage to say in real life. On the surface I cope very well now, but those subconscious thoughts show themselves in insomnia and night terrors to this day.
I believe you have a real strength in confronting this. For your husband to support you, he needs to be aware of all the facts. Your parents should not be able to phone him and simply announce they will be coming over.
You mentioned in a previous post you were going to counselling. I really hope that helps you. Drinking won't solve anything.
My thoughts are with you xxx