Random spotting question. Today is CD31, I have long, irregular cycles & this is an unmediated cycle of NTNP. I think I Oed between CD17-20, nov 6-9, we DTD CD19, nov 8, but the was the only time that wk. Sunday, CD28, I noticed I had a little spotting when I went to the bathroom, only enough I could see it when I wiped, not enough for a panty liner. Thought may I misinterpreted O signs & AF was on her way, but that was it, didn't progress into anything. I was expecting her between today & Saturday. Odd. Don't have my usual PMS feeling.

If you've had random spotting, not as a prelude to AF, do you know what caused it? Is that worrisome? What could cause it?