Talk to Gynecologist on Missed Periods

Hi, I have irregular period cycle since I got married. It’s been almost two years. My height is 5’3 and Weight is 80kgs. Diet is normal and I don’t eat junk food. Usually my cycle is for 29-30 days and the periods last 4-5 days. After marriage, sometimes I get my periods once in two months. It happened three times. Got the the hormonal test and ultrasound done everything was fine. I also got my thyroid checked and it was fine as well. No miscarriages or pregnancy yet. We are still trying. Now the issue is I got my periods in February and after that just a little brown spotting in March and after that no periods till July. No pregnancy yet as I have been keeping a track. I got my periods in July and they lasted for 5 days which is normal. Kindly advise me what can be done to fix this so I can conceive. Thanks.