Thank you for your query.
There is mesenteric lymphadenopathy
but it usually causes pain more than vomiting
An antibiotic course can be started and an anti-emetic can be given for 3 days.
If the vomiting persists a liver
function test should be done and a antiacid medication can be started.
If you have any further queries you are free to consult me.
Hope this answers your query.
Wishing a speedy recovery.
Have a nice day.