My period was supposed to start on the 21. on the 20th I checked my cervix to see what was going on and I noticed a very scant amount of brown blood. I put in a tampon that night thinking my period was going to show full blast overnight like usual. (i bleed pretty heavy)I wake up the next morning and it's a very very small amount of blood on the tampon. I am on day 3 of this very scant bleeding now. I haven't used another tampon or even a pad. I don't even see blood when I wipe, that's how light this bleeding is! I only see it when I stick my finger up there. No clue what is going on. I have never had this light of a period. If i wasnt checking my cervix i wouldnt have realized i was even bleeding. Any thoughts?