Hi,
Welcome to health care magic,
Nausea might have plenty of reason but you are suspecting
acid reflux then i would advice you to follow some dietary measures.
So,apart from medication you need to follow certain listed things,
1) Avoid oily,spicy and high fiber diet.
2) Avoid eating with full stomach rather you eat small frequent meals.
3) Avoid taking rest for 2 hours after meal.
4) You can walk slowly up to first 2 hrs of meal but don't walk fast.
5) You made regular eating pattern.
6) Have your dinner before 8 pm so that at the time of sleeping your stomach will be empty.
You should consult your family doctor for further advice.
Regards,