Thanks for your question on Healthcare Magic.
I can understand your concern.
Most common cause for hiccups is irritation in throat.
Since you also had
chest pain, we should rule out heart and lung diseases for your symptoms.
So get done ecg, 2d echo, chest
x ray.
If all these are normal then no need to worry for heart and lung diseases.
Drink plenty of fluids orally. Do warm water gargles 5-6 times a day. Avoid oily, spicy and hard to chew food.
Take beclofen tablet twice daily.
Don't worry, you will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.