But first, you need to talk to your husband. You need to make him aware of what you went through and let him be a part of any decision making that may deal with possible charges being brought against this doctor. If he is, indeed, responsible in even the smallest way for your having miscarried, I hope you will have the courage and the fortitude to see that he is punished to the fullest extent of the law and stripped of his medical license so that he never treats another patient again. Should you bring charges against this doctor, be prepared to face another drawback in the possibility/probability that your husband may be vilified by his superiors and lose his position at the hospital.
Both you and your husband need to see a competent therapist, separately and together, so that you can find the path back to your marriage and also to heal from the individual and very different pain you are suffering. In the end, going back home to your loving family, friends and the place you will be surrounded with love and support might well be the best thing for you. I would like to help in any way possible, so please let me know how you are doing. I truly care.