Need advice and or opinions

My husband and I have been TTC for 7 months. My cycle is normally 45 to 50 days it’s irregular.. according to my chart and ovulation sticks I ovulated when I should have.. I am currently on day 72 of my cycle. I have taken multiple tests and 1 blood test all negative. But my mother was the same way with me until she was 12 weeks. So what do y’all think I need help..