My kitten vomitted

My kitten casper, 8 weeks old vomited as soon as he woke up or more likely he woke up because he felt like vomiting. He seemed fine and was playing well before he went to sleep and doesn't seem to have a fever or ill at all! i fed bits of cream cheese like an hour or more before he went to sleep i don't know if this was the reason he actually likes cheese and never got sick because of it before. the vomit had bits of undigested carrots that he ate earlier ( Note: it is okay for cats to eat carrots peas and zucchini and some other veggies too) and obviously white cream cheese and and it was all mixed in yellow substance i don't know if it's digesting acid or something. Sorry for the disgusting details but just in case the're something abnormal. Should I take him to the vet is it serious or something that occasionally happen to cats? I will continue monitoring his behavior if I find him ill, sleepy or exhausted or not eating i definitely will take him to a. However, except for vomiting he's not showing any other sign of illness. So, is it urgent should i take him to vet or monitor him tell i notice something else?!

If it was a one-time thing and he's otherwise behaving normally (playing, etc), I'd just monitor him. The cream cheese may not have agreed with him.

I agree with jcat that if it's just a one-time thing, it's probably okay to just keep an eye on him, particularly if you only feed him regular cat or kitten food.