Thanks for the query
I think you should do urine pregnancy
test again and if still it comes negative ,you may required ultrasonography
of abdomen and gynaecologist opinon for better management and treatment.
for symptomatic treatment you can take antacid
drug,antiemetic drug,luxative drugs
Investigation may required
1)urine pregnancy card test
2)ultrasonography of abdomen
Hope I have answered your query. If you have any further questions I will be happy to help.