Mild chest pain may be due to gastritis but hand numbness is definitely not due to that... I would suggest you to consult nearest neurosurgeon for clinical examination and evaluation... For gastritis try eating several small meals instead of three large ones whenever you can...Avoid foods that irritate your stomach, especially those that are spicy, acidic, fried or fatty... avoid coffee,tea etc... Avoid stress,consider calming activities, such as meditation, yoga etc...sleep with head raised position and have dinner at least 2 hours before sleep..do regular exercises...take pantaprazole 40 mg twice daily before food with above....consult physician if symptoms persists.