Hello, I am a 15 year old female. I have recently gotten my period for the 2nd time. When I get it, it lasts about 4 days and is a very light flow. I have basically no symptoms. No cramps at all. Just slight breast ache and mood swings. Is this normal? Also, It doesn't come all day, it will start during the night and then stop by morning. Then it will start in the afternoon and stop by evening. Help.