“You dont need to lose anymore weight” what do I say to this?

I’ve been really proud of myself because I’ve lost 15 pounds over some months of consistency eating healthy, no fast food, and working out around 3 days a week. After I’ve mostly led a life of doing the opposite. I’m still consistent in my healthy lifestyle and I want to stick that way. I’ve never felt happier about my body and my mental health. I’d still like to lose a few more pounds.

Well my parents have been telling me to not lose anymore weight. It really really really pisses me off. I really don’t even know what to say. I’ve tried telling them I’m not trying to lose more weight just to get them off my ass. But they keep saying it! It’s none of their business! What would you say?