Any pointers?

Me and my boyfriend been trying to conceive for about 10 months now and its been so hard for us. Its a constant disappointment every time i receive my period. Im starting to worry that maybe one of us cant have children . Ive been praying for this blessing. We know 3 people who are currently pregnant and we get so upset because we want to be parents and we know well be amazing at it. I take prenatal vitamins but they aren’t seeming to be that effective. Do you guys have any pointers? Maybe someone out there is experiencing the same problems me and my significant other are. Please help, I’m losing faith 😞