TTC #1 & trying to not stress out too much

DH & I have been trying to conceive since just a few months ago (June) & nothing yet. DH is staying pretty calm & relaxed about the process & since I'm on a 2 week vacation between sessions at DeVry University, I'm much more relaxed & tackling this head-on. However, I got pregnant unintentionally several years ago (a few months before my 22nd bday) right after I had the Mirena IUD taken out. I'm a worrier by nature & am doing everything I can to ensure that DH & I are in good health. DH pcp says that DH's sperm count should be fine (DH is 25, I'm 27) & that it just takes time. My pcp gave me a full check up & I came back with a clean bill of health. DH parents had no trouble conceiving him or their other 2 kids (oldest is 28 & youngest just turned 20). Any thoughts, advice, or support is greatly appreciated ☺ .