2 years ttc with a 7 year old!

Sweet love
So a year ago I went with my gyocologist all test came back normal. She reassured me I would be able to get pregnant again and how to check my fertile window. Nothing has happened yet! My cycle is always on time but this time is was 6 days late which had my hopes up high thinking I was finally pregnant! Idk what else to do what other test should I do? I'm going to start going back to the gym and try and loose some weight hopefully that helps. Ladies, I feel horrible seeing friends having their babies and taking me years to try and nothing. Every time someone asks me when are we having a bother baby. Idk what else to do. He still hasn't seen a dr. He's not a dr guy and doesn't eat healthy either!! Help