Hi, Welcome to Health care magic forum, Cold may lead to Otitis media
with effusion or ET tube block which means you may get a fluid behind the drum or a negative pressure as suggested by doctors. This lead to hearing loss
but never cause a felling of a tightness in your chest and dizzyness
. As you told that your weigh is around 100 kg it seems to be overweigh. Panic attack
or overweigh may cause such problem.I would suggest you to relax first then if symptoms persist then check your BP, ECG,rotuine blood investigation and consult a medicine specialist as soon as posssible.