Heartbreak
noun, の adjective
A wound of your heart. That could be many things, but in this case it's heartbreak.
しょうしん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼に振られて傷心気味なので、パリに傷心旅行に行くんです。
He dumped me and I’m a little heartbroken, so I’m going on a trip to Paris to get over it.