last cycle was a bfn and i really want to optimize my chances. im 33 and ttc #1 and approaching cycle #4.

there's no reason i can think why we didn't conceive. i use my opks and identified my ovulation. had plenty of sex. used preseed once. ... ... ... So i figured I'd get hubby some sperm vitamins and saw the progesterone there. ... ... i remember reading about it a bit so i bought it on impulse. im wondering if i should use it or return it. i read the instructions but i don't really know how it helps... ... ... ... ... has anyone used it? how does it work? thanks!