opk tests please read!

So I'm new to tracking ovulation. I am over weight and I have maybe 3-4 periods a year. My husband and I have been TTC since 2015 and nothing! I went to the doctors and he got an ultrasound and checked my hormone levels and he said everything came back normal. He wanted me to start tracking ovulation to see if I ovulate at all during the month. I've started a new diet, exercising, taking prenatals, and fertilityblend. Has anyone ever experienced this and conceived??