Hello,
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The symptoms reported by you as nausea,hicccups,vomitting are indicative of gastrointestinal issues as:
1.GERD or Reflux Oesophagitis -- It should be relieved by intake of antacids as Tums.Try having it empty stomach for 5 days and observe for changes.
2.Gall bladder Stones or even inflammation called Cholelithiasis/ Cholecystitis. They are commonly associated with belching and indigestion.
3.Stomach or Duodenal Ulcer.
4.Enlarged liver - It can be ruled out with Ultrasound of abdomen.
Kindly visit a Physician so htat the cause can be ruled out and treatment started.
Take care!