Hi karan, I'm sorry no one has been able to answer your question so far. I'm not really sure of the answer myself, but I definitely think it is not normal and should be investigated further by a doctor. The corpus luteum is meant to shrink down in size after around 14 days if there is no pregnancy, or in the case of a pregnancy, it shrinks after the placenta takes over the hormone production at around 8-10 weeks gestation. The hcg produced by the baby is what stops the corpus luteum from shrinking after 14 days, so I would have assumed that after a miscarriage and the hcg level drops, the corpus luteum should shrink too.

Based on the fact that you have been ovulating and getting AF, your hcg level must be less than 5 and the corpus luteum should not still be big.

My suggestion would be to seek a second opinion if you are not having much luck getting information out of your current doctor. Everything might be fine, but I figure it's better to be safe than sorry.

Best of luck with everything