Advice for Body dysmorphia disorder?

Hello, I’m new to this site so I’m not sure how it functions. I just want to vent my feelings. I apologize if anything I say sounds disrespectful. This will be a rant so It won’t all make sense.
I’m quite sure that I have body dysmorphia disorder (BDD). My family and me is currently on vocation. My bdd has been nagging me ever since we left home. It hasn’t been this bad since the last year. It was the whole reason I lose weight. My weight was on my mind all the time I just wanted to stop thinking about it.

I want to tell my mom but there’s a small language barrier between us. I am not fluent in her language, therefore I don’t know how to explain my exact feelings. The last time when I told her about my body image issues she yelled at me. Which is ironic because she always told me that she wouldn’t get mad if I opened up to her and told her things that had been bothering me.
I come from an Asian household and my family has made comments about my weight. My grandmother would say that I was too fat and would die if I didn’t lose weight. But I wasn’t even overweight back when she would said that.
Now they say I’m too skinny. I want to believe them but I can’t. Every time I look at myself I don’t see any changes in my body. I still feel the same as I use too.