Bleeding?!

LJ
I'm confused, I have irregular cycles, TTC for around 10 months now. Last month I had spotting on CD 18 for 3 days and had a 39 day cycle. This month I'm now on CD 14 and have started spotting today, brown with streaks of red in. I don't use OPKs, and I feel it would be too early for implantation. Any ideas?