Implatation bleeding?

Lynée
My hubby and I have been working for baby #2 for 13 months now. I have regular periods 30-33 days apart. At 7DPO I started spotting. Just really light pink to brown discharge and really light. I wouldn't have noticed it if I hadn't been checking my CM. Its continued almost three days now. My normal period has maybe 12 hours of light discharge before things kick into gear and then its heavy until the end of the week. My period isn't due for 8 more days from when I post this. Its not my norm to have an early period and more often go late if there is any "cycle abnormalities." I'm just telling myself to ready for my period next week to not get my hopes up too much but hope springs eternal.