Implanting/period help?

I've had what I usually interpret as period moods and cramps this past week. Cramps I would describe as nothing severe and I log them as mild and only lasting periodically. I had some brown/pink blood spotting yesterday (Friday) and then when I wiped also brown/pink but more brown. Cramps leading up were again mild not lasting long. My period is usually regular and is due Monday or Tuesday. I didn't think anything of the spotting just thought it was my period starting early but now I went to the bathroom and I have nothing going on. I don't have any symptoms of being pregnant. I've been moody but that is my norm for my period coming. 
N ow I'm concerned am I pregnant? Was this implanting bleeding? Is this just a miscarriage happening? 
Can anyone relate?