Random Breakdowns ?!

I’m not the type of person to cry so easily because I had to grow up faster than anyone and take responsibility... but occasionally I have random breakdowns (like for no particular reason or place) and start to cry and kind of feels like an anxiety attack ... Recently at school during lunch I was with a guy friend , and then I start tearing up and was about to cry but I wasn’t sad or anything I just start to cry ... so I’m not sure if it’s something to worry about ?