severe stomach cramps

My partner burps a lot and also has severe stomach cramps

People who burp frequently may be swallowing too much air and releasing it before the air enters the stomach. Believing that swallowing air and releasing it will relieve the discomfort the person may unintentionally develop a habitual cycle of belching and discomfort.
Belching may be due to upper GI disorder, such as gastritis, peptic ulcer,gastroesophageal reflux disease i.e.GERD. Rule out the cause and treat.
Change the diet. Eat slowly, chew food thoroughly. Take small sips of warm water during a meal. Avoid chewing gum and avoid eating hard candy.