Hi welcome to health care magic forum. Most probable cause might be gastric irritation caused by irregular diet or usage of substances causing gastric irritation, like spices, chillies, junk foods, or oily foods. Which cause gastric irritation and result in vomiting
sensation which when it is minimal feels like giddyness. Other causes include iron defeciency anaemia
, middle ear infection
I advise you to follow some diet recommendations as avoid taking food in irregular timings, avoid taking spices etc to avoid gastric irritation .
If at all you find recurrance you should consult a physician for diagnosis and treatment.
Wishing for a quick recovery and may not recur. Thanks for calling.