Ovulation confusion

Brogan

Hi

I have been TTC since January 2016 after having the injection for 6 years, I finally got a 4/5 day period in September and had one in October and November for again the same amount of days but my cycle days are roughly 40 days apart so I am struggling to work out my ovulation days and if I will be even ovulating!

So stressed with this, so wish I would not have ever had this injection. driving me crazy.