Going crazy with trying to get a positive OPK

Darcee
Hi! My husband (39) and I (36) are TTC our first baby. I was on birth control and came off in May '16. I had my first solid period in June and had another in July (26 day cycles). I am having a hard time tracking my ovulation. I do bbt every morning at 6:30 AM and here are my test since my last period. Help! 
Yesterday
Today after a 4 hour hold. 
My bbt for this month.