You should not worry what your mother in law says about you. It is your husband that married you and not your mother in law. I do understand that most of them do have issues. They tend to make the burden fall on their daughters in law. But that is not good. Because sometimes maybe the problem is even the husband. But they will just try to cover up for their son’s problem. So I hope your husband does not support her too. I do know that she is his mother. But there are something’s that his mother should not talk about. Like your fertility. The decision lies between the two of you. So your mother in law has nothing to add to it. Maybe she said that to mean you are the one with the issues. But even if you are the one with the issues. What with it? Your husband knows that and he still loves you. So just assume her.