Hi guys i started using my cup for the first time yesterday and it's goimg great but this a.m when i woke up i took ot out cleaned it and put it back in and went back to bed but i felt a tad crampy so o thought i would take it out and use a liner and when i renserted it when i got up and cleaned myself up i notices there's nlood on the liner I'm not leaking but i was thinking would it be blood from the walls since the cup wasnt in the blood travelled down and out and it's just residue?