I feel like I’m never going to get pregnant

I have been trying to get pregnant for the past three years. I went to the gynecologist and she said nothing is wrong with me or my partner. I take ovulation tests and my period is a regular cycle. I love this app because it makes things easier, but I get depressed sometimes seeing women posting their pregnancy test and they are positive. Don’t get me wrong, I am happy for every person who is able to get pregnant, but when will it be my turn to feel that joy? I just need some advice on what I should do.