Positive opk cycle day 14 and 32 day cycle

We have been ttc a while. Fertility testing was done and we are unexplained infertility. I ovulate, tubes are open, sperm is good. Tried two IUI’s and took a break. This is the first month in a while that I used opks. I had a positive opk on cycle day 14 and just got my period on cycle day 32. I usually have a positive opk cycle day 14 and a 30 day cycle. Could this month just be off for some reason? I did start eating better and working out this past two weeks