I don't know If I am considered fat or not? I don't know what to think?

I am 5"4 and weigh around 140 pounds! I have a crazy amount of mucle tho? Legit half of my body is mucle! I wear a size 7 pants because my thighs are sk big! I HAE a huge gap in the back of my pants because my thighs don't fit into the size pants my butt would!! What shoul I do?