Help please

I have a 46 day cycle back in august) my period normal last 5 days.....so in september i have a 35 cycle day) my period also last 5 days....i have irregular period.......i have (NO pcos) (or cyst) i never used opk i only check cm...My question is AM i ovulateing???? By looking at how my period stay???? In october know am just BD every other day i start doing it by 3 days after af leaves an i start put my legs up......because i never use to PUT my legs up..am not stressing i just want to do it it natural way....BUT do you guys think am ovulateing?? My ovaries are also fine i have ttc for a couple of months now...