Feeling sad after family leaves ?

Cyra

My daughter was born July 18 and my parents arrived to visit us that next day all the way home from Seattle (we live in North Carolina and it has been a year since seeing them). Today they left after visiting for over two weeks. Since they’ve left I’ve felt tearful and it’s been easy to cry. I haven’t felt sad at all with them here. I believe it’s only situational, but was curious if anyone else has had these emotions after family has left ?