Many conditions (banal or serious) can cause abdominal pain. According to the data that the pain lasts for 1-2 weeks, it seems likely that the pain is not very severe because you wouldn’t be able to stand it for so long. Several diseases can be considered and tested as possible reasons for the case of lower right abdominal pain:
1. acute or chronic appendicitis, usually (but not necessarilyy) followed by nausea, vomiting, increased temperature and right leg limp;
2. mesenterial lymphadenitis (inflammation of a mesenterial lymph node)-pain can be followed by the same symptoms as above plus diarrhea;
3. adnexitis (inflammation of the right ovary and tube)-besides pain, painful urination and vaginal discharge can also be present;
4. peritoneal adhesions-can be due to C-section;
5. renal colic- pain can be due to an infection or stone in the right ureter; often followed by frequent and painful urination;
6. ovarian cyst-ican be followed by irregular cycles;
7. muscle pain, etc.
You can visit your primary health doctor and request several diagnostic procedures: a physical examination (palpation); an abdominal ultrasound-scan; standard blood work (blood count, sedimentation, liver status, kidney status…). A gynecological examination can be also performed. CT-scan or MRI can be done later, if necessary.