This is Dr Basu, experienced Internal Medicine Specialist.
I am here to address your concerns and provide great service.
Left sided stomach pain with vomiting is likely due to the viral infection commonly.
Stomach flu is very common.
Usually improves by 2-3 days.
You can try over the counter peptobismol liquid 30 ml 3 times daily.
And follow a bland diet and drink fluids.
If the symptoms do not improve in next 2 days, then this can be serious like pancreatitis.
Otherwise, usually this improves within 2-3 days.
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