Is it ok if you pass out while laughing? Anxiety?

about a year ago i was playing handball with my friends and during the game a kid got hit in the head and it was really funny and i remember me laughing really hard that i could not breath and everything went black. then all i remember is getting back up of the floor dizzy and lost. it went away after like 40 min. i've been really well after. now since march i've been having anxiety and panic attacks it started out very low anxiety to now i have anxiety like 24/7 and i have really really bad symptons and sensations. help please!