Hey! I was going through the same thing earlier this year. Here is my answer:
1. Sometimes, you may get cramps when you are on your period. But most of the time, you feel normal. You may feel some mood swings and other emotional thoughts. Don't worry, it's normal!
2. You will get hairy in some places. Tell your mom or another trusted adult about these changes. If you want, ask them to teach you how to shave!
3. Im kinda getting a curve too, but it's normal since your body is changing in your tween/teen years.
4. OMG, this happens to me too. It feels very awkward, but no shame!
Hope this helps! Don't be afraid to ask your parents about it. :D