Thanks to eurochick, I was pointed to a very helpful fertility monitoring site.
The site is great, and has been dead healpful, but it suggests checking your cervix every few days, it explains it as "If you are ov'ing it (cervix) will be harder to find and will feel soft, like a set of lips, if your not in the ov phase, it should feel like the tip of a nose"
Anyhoo, acrobatically challenginging myself this morning I atttempted to locate said cervix, could I find it, could I fook, I don't know if you have to be really gymnastic or owt, but I can get nowhere near the top end of my fanjo! Even trying really hard!!!!
Has anyone else tryed (or failed) this cervix checking malarkey? 
Is it even important to do it?
Help!