confusing cycle, help!

Lillo
I'm so confused. I'm 14 dpo/cd 31 (or maybe 2)...Thursday I had a flash of red/pink blood that looked fresh, but since then it's just been brown spotting. I had major cramps that day and the day before, but no cramps since. I've tested twice and negative (cd 11 and 13). 
Should I log my period as starting and count this is cycle day 2 of a new cycle? Or just keep waiting?