Tired of this

I am trying to be so positive but I just can’t anymore. For a whole year (this month) my husband and I have been trying to have a baby. I’ve done the HSG Test, which came back normal other than I have a accurate uterus and even that was very minimal. I’ve taken home ovulation tests and I get a solid smiley, Ive done the blood work to test my hormones and everything is fine! My husband has a child from a previous relationship so I’m pretty sure it’s not his sperm...my friend just announced she is pregnant after just having a child 10 months ago, and I’m just really sad. I don’t understand what I’m doing wrong.