Hi, I am a 23 year old, I have read and read and read different articles trying to see if I could some idea. Every since I started having periods, I never had sensitive or sore breasts and my periods are relatively normal/regular. I also have cramps and they are normally pretty painful, from about the second day until about the third or fourth day. But this time it was different, I started my period it was spotting/light, kind of pink in color, no cramping, just A LOT of gas and what seemed to be gas pains. The 2nd day light and kind of pink to bright red in color, no cramping. On the 3rd day still light but it was bright red no cramping, but I did have what felt like gas pain in the lower part of my back. The whole part of my lower back was sore. My breast are a little tender to the touch. Tired feeling? Yeah maybe a little than normal. I know I m not pregnant. Or could I be? Or maybe its just my body changing?