First round fail..did not ovulate

Well I did not ovulate on the first round of letrozole 2.5mg. I was really hoping that it would work.. my progesterone level was 0.4 ng/mL on cycle day 21. 😞 my obgyn doctor is bumping the dosage up to 5mg. Feeling discouraged and feeling like a failure. Hoping next month will be the month. Just needed to vent my disappointment to someone. Thanks for reading..