Ds was a first time lucky baby and we have just spent a year trying to conceive our second. I told myself I wasn't going to get too stressed or serious about it, but I found that once I started temping, rather than becoming obsessive about it, I became a lot more relaxed as I knew when I had ovulated rather than needing to second guess my body (and get it wrong, because, like you, I don't have a standard cycle).
Not trying to nag you into temping (honest!) but it might be worth considering.
Good luck with ttc though. The conception boards are fab and full of wise MNers if you need them.
Thanks beansprout. I think I will start temping - you're right about the guesswork. Its so annoying. Was shattered last 2 months trying to cover all the options and was relieved to have a break until I realised tonight was the night!
Right off to learn about temping but one last question (hope you don't mind) how long does EWCM last and when it goes does that mean you're no longer fertile ??