My facial features has changed a lot and I don't recognise myself. Why did my face get rounder as I age?

I was supposed to be heart shape face with no chubby cheeks but within 2 years my face get rounder than before. It's strange, because my weight is still the same, just face has changed. Become puffy and round. I visited endocrinologist before six months, blood test was good, medication wasn't prescribed. I feel so depressed about that that planning to go again to test my blood, hormones. Please, just tell me where to go for help and what to do.

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