I wouldn’t be upset about what people think of me. That’s rule number one of surviving in this industry: don’t care what people think. Just be true to yourself and be as pleasant and professional as you can. If you start caring what people think, you’re screwed.
I know I’m not a conventional beauty; you can read a lot of painful things on the internet, which criticise you aesthetically - but as far as I’m concerned, that’s not what an actress is.