Hey! I hope somebody can help me out here.
My period usually happens around the 28-29th of each month. My last normal period was July 38th-aug 3rd or so.. I completely missed my period for August, I took a on the 8th... negative... waited till the 11th.. negative.. It is September 16th, and me and my boyfriend had sex last night, and I have been spotting lightly since. More like a darker (old blood) look to it. And mild cramps. I don't know if this is my period or what I should do..?

I would suggest going to the doctors to make sure everything is OK, but its possible the period itself is on its way. Just maybe not a heavy flow?