Implantation vs. Menstruation

I had some spotting today.  I'm 11dpo, so it's a little early for AF.  I would day 4-5 days early.  Spotting is a potential sign of implantation, so I am cautiously optimistic.  I did also have a temperature dip yesterday, which is also a sign.  Talk about an emotional roller coaster!  I cannot ever remember having an early period, but I suppose if I'm going to have one, it will be while I'm ttc!  So, I am hoping, hoping, hoping that this is implantation.  Please cross fingers and toes for me!