Another BFN

We’re on our 4th medicated cycle and 2nd iui. Been TTC for almost 3 years and just got another BFN. We have unexplained infertility but His counts are in the 400 million, that is not a typo - so it’s obviously my body that is the problem. Each round feels like nothing but disappointment, and I’m having a hard time dealing with the results this time around. I’m sick of my friends and family asking and telling me to just stay positive because positivity doesn’t get you pregnant.