No blood on my pad?!?

Ok so I'm on my period. Whenever I wipe tons of blood is on the tissue but none on my pad. I've been laying down has it just not leaked out? (so gross I'm sorry but this is strange) I heard that this can happen if you've exercised a lot, I had 8 games(basketball) in two days and my period is usually heavy but strangely light/medium now. Please help