Thanks for your question on Healthcare Magic.
I can understand your concern.
Your symptoms are more suggestive of heart diseases (ischemic heart diseases - IHD).
Normal ecg can not rule out IHD.
You are having risk factors liked
hypertension, diabetes, obesity. So we should definitely do more investigations to rule out IHD.
So get done 2d echo and
stress test (trade mill test).
If all these are normal then no need to worry for heart diseases.
Sometimes
acute gastritis can also cause chest pain, nausea, sweating etc.
So drink cold water. Take
proton pump inhibitor like
pantoprazole on empty stomach.
Avoid stress and tension, be relax and calm.
Avoid hot and spicy food. Avoid junk food.
Don't worry, you will be alright with all these but first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.