Seems I have started some discussion here!
I am on clomid and as I said have been advised to use fmu by fs.
I will definitely ask her next time and will get back to you all about what she says as I sure she will have a reason for telling me that! When conceiving my dd I always tested late afternoon but never really had convincing results anyway! Maybe I am just one of those people that they don't work for!
Thanks again for all the replies!