Discouraged

I don't want to offend anyone, because I know there are people who have been TTC much longer. I am just feeling discouraged. This month I used OPKs, had ovulation bleeding, BD the day before, day of and day after O. I am currently 11DPO and glow told me to take a test. Of course it was a BFN. We have been TTC for 6 months, I am on progesterone suppositories and I had a chemical in august. What are we doing wrong?