Comfort advice

My wife (29F) and I (29M) started trying to get pregnant about 6 months ago but it hasn’t happened yet.

Over the past few months she’s kept track of her cycle with an app and we’ve been making a point to try on days that it says she’s most fertile. She started taking a pre natal, I take a vitamin for men.

We’re not giving up and I understand sometimes these things take time. I don’t think going to the doctor to check fertility should happen just yet.

However, do yall have any advice on how I should be there for her during the sadness/frustration? I feel very sad for her. I am upset as well but I try very hard not to show her that. I don’t want her to know I’m concerned. But, I also don’t want her to think that it doesn’t bother me. How should I handle this?