Wow, next time you need to see a doc, can you see someone else??
Him asking you multiple times about why you haven't lose weight sounds to me like he thinks you were lying to him about something.
Like he was trying to get you to admit something.

I would never go back to that doctor again, personally. But I know sometimes you don't have the luxury of choosing (although you should be able to).

Good luck with your health and that idiot. So sorry.