looks like you are having migraine
.but also it coud be due to stress
i would advise you to meet your physician and get a complete check up done to rule out other causes of lightheadedness
. avoid coffee, chocolates etc, avoid loud sounds.
eat regularly. avoid starvation
drink lots of water.
in case the symptoms worsen call your emergency number.
i hope i have answered your query.
take care and contact us at HCM in case of further query