Anyone had symptoms b4 taking a test?

Rosie
Has anyone had symptoms & know they've been pregnant before taking a test? 
Only asking as I've been feeling slightly sick for the past few days... Nothing too bad, I've not actually been sick. 
It's about 12 days until my next period so I don't really want to take a test yet. 
It could just be because I'm ovulating! 
Was just wondering if some people have had this or felt something different & on taking a test found out their pregnant.