Although you may have a lack of menstruation due to only having one ovary and a small chance of pre-menopause, I would at least follow up with your doctor for a full blood work up, checking hormone levels etc., as you don't want to end up waiting too long and then have the same situation occur again where you get a thick lining and end up with another D&C. So I would follow up with your GYN soon to check hormones etc., and if all is well there, they may want to jump start a cycle so you don't run into the same situation.
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