I am worried I waited to long.

I feel like I waited to long to try to conceive. I am 28. I have normal periods tried 3 months and nothing. I just don’t want to feel like I am the only one who waited till now. I was checked to and was told everything is good. How long did it take some of you guys to conceive? How old were you when you had your first? Anyone else my age? I am a nervous wreck.