High honey. I'm 30 too and understand the way that you feel about time ticking and all that.
I missed a period before becoming pregnant, was convinced that I was pregnant and I think that my body just went along with the idea (if that makes sense). You body is reacting to the stress you are putting yourself under. I would try and just take things easy. A year isn't a long time to be trying for a baby....And I know that doesn't help really as you want one now.
The problem is that by putting yourself under so much pressure, it takes the fun out of conceiving.
I can only recommend that you take a deep breath, calm down and just wait for nature to do it's thing. The other option is to go and see your doctor about taking something like clomid, an ovulation drug. I would recommend researching this on the internet, so that you know your rights, and know what you are asking for. That way the doctor can't fob you off.
Good luck and I hope things work for you soon.
**baby dust**
xx