Need opinions!! 17dpo or 9dpo???

[JMarie120]

I have an irregular cycle. I've ovulated as early as 13dpo and as late as 24dpo (after mmc and d&c). FF marked my ovulation at 13dpo and then noted my chart as triphasic as of cycle day 21 (8dpo). I am never late for AF, if anything I am early. My longest LP has been 13 days. I am now wondering if I actually ovulated cycle day 21. I had what i thought to be EWCM that day, but i also had fertile CM around 13dpo. Thoughts?????? I've been charting 7-8 cycles and I don't know what to think. Yesterday after a drop in bbt I thought was on the way, but this morning my bbt had a small increase. Tested this morning (not FMU) and .... Any opinions would be greatly appreciated!!