Help please!

Melanie • Fri, Oct 03 • 29yrs - TTC 6months ago- never used birth control

My cycles r not that regular 29-36days so i always start testing with opk starting day 11.last time i got my period on 9/18.i got my first + on cd13, bd same day. light spotting cd14. -opk on cd14 and cd15. A little more spotting on cd16 and again a +opk on cd16. Temps are all over the place. Im ttc #1 and suspecting endomeriosis. Please help me understand