Anyone else feel like they let their SO down when you get your period..😞

Me and my BF have been ttc since February. When we started out I told him it takes some time to make a baby. He didn't really listen to me. Now every month that I get my period and I have to tell him I feel like a complete let down. I hate taking tests by myself so there were a few times I was so sure that I was knocked up that I took the test with him... And they were negetive.. And he was really really sad. It feels like it's my fault 😞 I've quit smoking I do what I can I track my ovulation and it feels like nothing works. 😞😞