Thanks for the detailed info
Sorry for delay i was away.
Some of the possibilities include
1-Gastritis/GERD is the most common cause of nausea sometimes associated with feeling ofregurgitation,hear burn
avoiding spicy foods,increased intake of water,antacids before meals and sometimes drugs like metocloperamide are used before meals to combat with nausea and vomiting
2-Sometimes a sickness feeling and nausea before menses is seen (typically few days before mesnes,and is due to hormonal changes,
If you are sexually active you need to get your pregnancy test done asap.it can be the cause
3-If there is fever,belley pain,bowel habits change,chances if gastroenteritis are likely
and urgent ER consultation is advised
Otherwise i would advise you to
1-Take antiemetics and antacid before meals
2-Use plenty of fluids and avoid spicy foods
I HOPE THE INFO HELPS
if you need further assistance feel free to ask
If you were satisfied,Kindly click ACCEPT,Thanks.