For context, I am a teenage girl. I've been trying on clothes from my closet today because I was bored and I realized something. I have clothes from XL to XS, they all fit me well. I remember the times I felt bad about my body because I wore M or L clothes, but all this time those XS clothes were there, and I don't know what my body looks like anymore.

My mother has bought me clothes almost all my life, I have only bought some clothes and I followed the size that my mother told me, in addition she tells people who want to give me clothes and tells them to buy the sizes that I said before . She does this because we don't have a lot of money and she wants my clothes to last as long as possible, and I understand that, but I know that not knowing my size has never greatly increased my body dysmorphia. I don't know what to do