Hi Susan,
I had that very same thing happen to me last week. It actually kind of scared me a little bit because I don't normally experience such mood swings and it just hit me out of nowhere. I almost started crying - for no apparent reason that I could put my finger on.

Fortunately - it passed and has remained gone. I remember thinking about making a post and didn't even know how to phrase what was happening

Glad you are feeling better !