19th September 2006 15:12
Hi Sinead,
I chart my cycle but have been using opks for the last few months just to confirm what i'm seeing in the charting. I've found them pretty useful - charting tells me everything i need to know but the opks have given me that extra bit of comfort.
One thing I would say is that you will get a positive up to 36 hours beforehand but your fertile time starts a couple of days before this - so you wouldn't want to be waiting on a positive before doing the deed - you should have started a few days before that if that makes sense. But it will help you find your peak time - when you're most likely to get pregnant.
Just make sure you test at the same time every day (not mornings) and be conscious of how much you drink beforehand, as that can skew the results.
Good luck!