Advise Please

Tara • 33 yrs old TTC Baby #1 since August 2014
This was my first month TTC. Short and sweet. I've been regular with AF for months. 9 days, spotting first day and then heavy until end. This month spotting almost 5 days now. No full AF day yet. Not pregnant  How do I move forward with planning for upcoming fertile time if period is so off? I can do ovulation tests but when do I start since I don't even know if AF is gone or just starting??
​Any thoughts or suggestions would be very welcomed! Also wondering if it was the stress of TTC that threw my cycle off?