Fed up

After seven months of tracking and changing my diet I was five days late this month so I was hopeful that this would be it but my AF came this morning and I'm gutted I'm so fed up now I just can't take it anymore I have so many people in my lift getting pregnant accidentally and I have to pretend to be happy for them and then go home and cry 😭 I don't know what to do is there something I could take to help including ease my chances ???? We have a very active sex life and plan sex around my fertile week but now I seems for some reason my cycles are starting to go to pot and I don't know why I'm almost ready to give up and say fine what ever I'm done if I don't care then I can't get hurt when it doesn't happen 😪