I test at work, I take my bag into the ladies on the way out to lunch and do it then. I just have to wait until I'm alone again to look at the result!
I've only ever used clearblue ones which are really expensive so I've never done two tests in one day - what does everyone think of the internet cheapies? Would it be worth me getting cheaper ones so I can retest after work?
Re the drinking thing, I usually try not to drink much for about 2 hours before I test - just take a few sips of water if I feel really thirsty and then drink loads as soon as I've done the test.