the doctor rang last night to apologise

Hi,
Short recap. Last thurs a doctor said to me 'are you his carer...' I said 'no his mother'. He responded 'oh I am suprised' in a suprised tone. When he left the room for a very short time I said to P 'what was that comment about?".

I found this comment and the awkward silence afterwards something that kept going round in my head. Hence, I rang the clinic and made a complaint.

The doctor rang last night and apologised. I asked him directly what he meant. He did not say but did say that 'it was a stupid thing to say and I wish I had not said anything. By the time I realised this I had no where to go with it so didn't continue with the conversation'.

I told him the following: '(our story very briefly), I expect people on the street to say things but not a medical professional. If you ever have to ask a woman her relationship to a child then always assume she is the mother. She will correct you if that is wrong. Someone this morning made the grandmother comment to me and said ''taking your grandchild for a walk''. My reply was ''no he is my son, it took a long time to have him - no storks available''.
The doctor said 'I sincerly apologise for any hurt I may have caused you and hope you can forgive me. I need to be more aware of people's backgrounds. I am glad you rang us and said something'.
My response was 'thankyou for ringing me I appreciate it. I accept your apology'.
That was it basically.
The only thing I didn't say to him was 'You should have known better than to make a comment like that'. I don't think I needed to spell it out that plain as it was pretty clear already.
I am glad I rang the clinic and apologised. This doctor owns the clinic.