Am I Too Fat For Jeans?

I'm 14, 5'0 feet, and weight 135-140. My arms are slightly big, I have some stomach fat even though you can barely see it; even if I'm wearing a close fitting shirt. I think my fat mostly went to my thighs and (it's not a bubble lol), so when I bring up wearing jeans my mom is like "Your is gonna look huge", so right now I only wear sweatpants, but I'm trying to lose weight by eating less, exercising (I'm a BIG eater ^__^) and actually lately I haven't really felt like eating. So what would you say? Thanks for your response! ^__^