Disappointed

We want so badly to be pregnant, and we feel like we're running out of time. I'm 35 and he's 42. My Husband is trying sooooo hard, including making me put my legs up afterwards, lol. I'm starting to feel like a failure. Every month I feel like I'm pregnant, and every month mother nature rears her ugly head. I'm checking CM, I'm checking my bbt, I'm taking prenatal vitamins, last month we had sex every day but 1 in the fertile window, and somehow Aunt Flow still came for a visit. 😢 Please send prayers and baby dust our way.