The pain in left side of chest may be due to production of gas in your stomach, which is irritating your diaphragm & is also related to production of acid in stomach.
Razo is antacid
which prevents acid formation in stomach.
is anti emetic.
So...the medicine prescribed by your Doctor is correct...please continue them as advised.
But these medicines will only provide symptomatic relief.
And it is needed that you take certain precautions regarding your diet & lifestyle:
1. Take soft, plain, non-spicy foods
2. Drink lots of water to maintain adequate hydration
3. Avoid fast foods & gas producing food products like cabbage, etc.
4. Avoid smoking
5. Keep away stress
6. Exercise regularly & practice meditation
Wishing you a good health
Thanks & take care.