Times when i feel alone, but he tries

Though he tries, it doesn't work, his solution is having more sex, I don't test every month, but whenever i do and it's BFN he knows i get depressed. He gets curious about the mechanics (of ovulation and periods) but not really TTC talk, I avoided going to the dr. the first three years, but now that i'm on medications (for hypothyroidism and insulin resistence due to PCOS, also taken Provera recently) he is getting more frustated that it's not happening because (to him, in theory) the meds should "fix" us not having a baby, unfournately things aren't that simple and it frustates him, also seeing how many people we know having kids (most of the time not trying) is also frustating him, though he doesn't show it much. The frustation hit me (about 9 months TTC) sooner then it did him so i'm trying to help him deal.