Mixed feelings

i've never experienced the mixed feelings before i 
thought i felt them But now i know that i didn't :D 
one moment i'm happy because i heard  something cheered me Up but at the exact moment i think directly of something that worries me and i feel worried the main two feelings i'm feeling daily and they are concurrent really they happen together i feel them both together happiness and worry  and this leaves me shocked and disappointed  i feel like i'm every where and i'm not gathering myself up :( i'm a total mess