Opinions- Irregular cycle

R
My husband and I have been try for baby #1 for over a year now. My cycles have ALWAYS been irregular. Now that we are TTC it's so frustrating! Here is my current situation, I'm looking for advice. 
Back in July my OB/GYN put me on Clomid to help with my ovulations. I took my first dose as directed. I had a peak ovulation test result on day 17 of my cycle. My OB/GYN called after he received blood work I had done to say I was in the right place numbers wise and that the dosage seemed to be perfect. 
In August, I took my Clomid again. I took ovulation tests from day 14- day 23 and never had a peak surge. I am now on day 40 of my cycle and haven't had a period. I took a pregnancy test on September 8th (day 33) and September 14th (day 39) both said "not pregnant". 
I don't know if I should just wait until my next period and take my Clomid again, or if I should call my OB/GYN to ask about having to increase my Clomid dosage? Any suggestions. 
I feel for those who have been trying for a length of time. I'm at 15 months and I am so frustrated I just want to give up. I appreciate any help!