Hello
There is nausea , vomiting , lower
abdominal pain ( side not mentioned as on the right side i.e.
appendicitis ).
You didn't mention the gender ,if female patient then pain may be due to
ovarian cyst ( if patient is young child bearing age )or
salpingitis on both side .
Such pain in general may be due to these possibilities , these include:
1 Renal calculus , may be on any side .Diagnosis can be confirmed by ultrasound of both kidneys.
2
Urinary tract infection , such type of mild pain may be due to UTI. Refresh get in urine culture and sensitivity test.
3 Amoebic colitis is another cause of such symptoms , so get in stool examination for entameba histolyca.
As you are complaining that there is also nausea and vomiting , this may be due to Hyper acidity caused by lower abdominal pain .
So I recommend you consult a gastro-enterologist and get his opinion as physical examination is important in this type of cases .
If you are a female patient , then consult a gynecologist and get his opinion.
Hope this will help you.