But my sister [redacted] is also a nurse and she’s a girl to so she might talk to me about it if I tell her

Oh for sure, your sister sounds like a great person to talk to! It's super helpful to have someone in your family who knows about bodies and health stuff, and who is also a girl so she gets it.

Nurses are literally like, experts in how bodies work, and they've seen it all, so she definitely won't be weirded out by any questions you have. It can feel a bit awkward at first to talk about period stuff, even with family, but seriously, she's probably expecting it and will be happy you came to her. You can even just start by saying something like, "Hey, can I ask you something about growing up?" or "I have a question about my body, and I was hoping you could help."

Having someone you trust to talk about all the changes happening is really the best. They can help you understand what's normal and what to expect, and they can answer all those little questions you might not want to ask just anyone. And she can probably give you some good tips too!