AIO that a professor insinuated I was having weight loss surgery

I am an overweight woman, I know I'm fat, I have actually lost weight in the last few years.

I was in the process of writing a test and I was flipping my hair behind me because it was annoying me. This professor asked if I had a question or if I was adjusting my hair. I said I was just getting it outta my face and she said I used to have long hair too, but then bariatric surgery ruined it. I replied oh I had no idea that the surgery could cause that and she said "yeah so you could lose your hair too". In the moment I felt that that's a weird comment to make. I have no intention of getting bariatric surgery, never said anything about it.

But afterwards the more I thought about it I was like nah that's fucked. And got pissed off. A professor shouldn't be making comments that concern my body.

I told friends afterwards what happened, all of them agreeing its fucked. and one of them said that she heard the prof starting to mimic another students accent while answering their question.