I NEED PERIOD ADVICE NOWWWWWW!?

This happens to me all the time. It's normal. There just hasn't been enough blood to go onto your pad...i hope that makes sense...it could also have to do with the activity you're doing. if you're running or jumping or stuff like that then more blood will probably come out on your pad. if your sitting and relaxing there wont be as much blood....well coming on your pad at least