New to glow! TTC #1

Hey all! I'm 22 and have been with my guy for 3 years! We are TTC but keeping track of my cycle and ovulation is so foreign to me. I have Googled a ton but would like advice from people who have been there. My cycle is normally 26 days lasting 5 days although my period started today which makes my last cycle 25 days. When should I expect to ovulate day 11 or day 13. I have had the Mirena twice in a year and a half span although it has been removed for about 9 months and I went to BC and have been off BC since August. As much help you can give is appriciated!