hi and thanks for your query,
thanks for your question. A chronic dull pain to right side of the stomach most of the time is due to appendicitis
, which must be excluded. Other causes like those of the ovaries, infections and renal must also be excluded.
An obstetric ultrasound
coupled with a good clinical evaluation and a few blood tests are usually sufficient to make a good diagnosis. the feeling you felt for w few minutes should be something transitory. repetitive episodes should warrant an consultation and evaluation by your primary care
I suggest you meet a gynecologist for a complete evaluation and get an ultrasound done.
Thanks and best regards,