One of mine did that before and tried for probably five mintures and spit up a cricket antenna that must have been tickling his throat. I have also has a little 3 month old male walking on my hand and grab a loose full size cricket and try to swallow it, he started to choke instantly so i has to take it out for him. It could have been nothing or it could be serious. The vet is teh safest way to go. good luck.