Ovulation?

Kristine
Okay so, I am 10 days from the start of my period... I haven't had any bleeding for about 4 days. My cycles are irregular... It could be 28 days one month then 32 days another. But never longer than 33 days I believe. We've been TTC for only 1 month but I'm just not sure of when I am ovulating! I also bought opk but don't know when to use it! I have also been tracking my temp but still unsure of when I'm ovulating. I am 32 yo and really want to get pregnant!