Can someone offer advice?

My SO and I have been trying for 6 months now after 3 losses last year. Have not been successful so far. I temp, do 2 different kinds of OPKs, etc. I know exactly when I O and when it’s time to BD. Yesterday was O day and I had a positive opk in the morning and again around 8pm. Did another around 10:30 and it was fading. Wasn’t able to BD until around 11. TMI, but the night before when he came, there was barely anything. I know work has been stressful, but I feel like because there wasn’t much the day before O and then how late we BD and the fading opk...I feel like we missed our window and this is another month that will go by. Do you think there is a chance after it being so late in the evening last night and with what happened the night before? Just frustrated and getting exhausted of doing this every month after losing 3 babies last year.