Hi there, This is Dr Basu, Experienced Specialist. I am here to address your concerns and provide great service.
This is indeed concerning.
Which side of the stomach is affected?
Straight across the stomach no particular area or part just all. The pain when at is worst feels like it's coming from the centre
this can be acute appendicitis.
The pain initially starts aroun center.
And given your severity of symptoms this should be addressed in the local hospital with a clinical evaluation.
Other possibilities include:
1. Intestinal infection.
2. Kidney infection
3. Rupturing ovarian cyst
4. Pelvic inflammatory disease
So you cannot treat this at home unfortunately.
Whatever it is, can be treated well in the hospital.
It was my pleasure to help you today. I am Dr Basu experienced in Gastrointestinal Diseases.If I have answered all your questions, Please rate my response Excellent (click on the smiley faces) under this chat box only.Please bookmark my profile for asking further questions! This is the link to my profile: http://www.justanswer.com/medical/expert-mysticdoc/