I think my breasts are starting to develop, my mom thinks otherwise. I'm now confused.

If you think your breasts are starting to develop, you're probably right because you know your body best! The first sign of puberty for most girls is usually breast buds, which are small, tender bumps that form under your nipples.

It's super normal for one breast bud to pop up before the other, or for them to be a little sore or tender sometimes. And they might not look like full breasts yet, which can be confusing, especially for grown-ups who might forget what those first changes look like. But if you're noticing changes, that's usually exactly what's happening. They'll probably keep growing and changing for a few years.

It's a really good idea to just keep an eye on what's happening with your body. You can even track it mentally or privately in your head. Knowing what's going on with your own body is super powerful.