HELP! Honest, confident replies only please!

BringOnBaby
This is one of my first times writing on the forums although I have been reading your posts for a while and finding them so helpful.  Thank you all !Last weekend I used OPKs (which worked well) and the Clearblue Solid Smiley came up last Sunday 5/15. - which would currently put me 7DPO. Anyway I just went to the bathroom about a hour ago to find that I am bleeding.  Very light, not "flowing" ...& It isnt enough to need a pad but it is bright red fresh blood when I wipe. (Sorry for TMI)I am so confused and have no idea what is gong on now....  AF usually starts with 12-24 hours of spotting and is a 5 week cycle.  This is only 3 weeks?  I am ALWAYS so regular. Any suggestions or ideas would be much appreciated...
Thanks Glow Friends!