Getting Pregnant.

Hello, I had my son at 20 years old and had the Mirena in for about 6 years. I'm 27 now and trying to conceive on my ovulation days but nothing seems to happen. Do you think my time is up because I'm about to hit 30 soon. That's how I feel. 😢 I'm suppose to start today and nothing but my period has been always started at different times. I've taken 4 tests throughout the week already already too.