Thanks for writing your query.
After reading your post, it seems that you are having increased acidity and gas production.
You can add Domperidone
10 mg along with Nexium
You should follow some precautions like :-
1. Avoid spicy/oily foods.
2. Donot miss a meal.
3. Avoid cigarette/alcohol.
4. Decrease tea/coffee.
5. Donot remain empty stomach for long.
6. Avoid self medication
especially pain killer and steroids
7. Avoid gas producing foods like peas, legumes, cabbages, etc.
8. Drink lots of pure water daily.
9. Consuming curd or yoghurt will be helpful, if it suits you.
You should also get yourself investigated for H. pylori.
I hope this is helpful to you.