Tips on how to not stress about not getting pregnant?

So I went to a ob gyn last Monday and basically I don't ovulate every month because my periods are so irregular so I have to put on just a little more weight.  I also had chlamydia two times not sure how long but was treated and I told her I've been worrying a lot because of that. She told me to stop having anxiety about it and I try so hard not to let it get to me. We have been ttc for 12 months and my boyfriend is perfectly fine with it not stressing just waiting till it happens. I wish I can do the same but it's hard😭 I know the more the stress the more I worry it won't happen but just seeing like baby bumps my best friend is pregnant baby stuff etc it's like hard I try not to let it get to me so often I wish I can just relax and just let it be I'm tired of making sex as a chore I don't want to use opks cause that's just going to put up stress but its hard any tips?