My son opened us a facebook page and he is writing to his friends . I found out t?

that he face booked our dr, and she blocked us. The reason why I know this I overheard him griping to a friend about it. He even went under my name and I changed my password. Now, I am embarrassed of what he did and afraid she'll drop us as patients. We just started going to her and doctors are hard to find. I grounded him of course but now I am worrying about this problem. Believe me , she is NOT very friendly and I am very careful around her. What can I do?