Girls, could you please tell me, it's very often hurts right side of m…

Girls, could you please tell me, it's very often hurts right side of my abdomen, somewhere on the last rib in the waistline, straight from the right side. I don't feel any pain when it happens. The first time it was shooting pain, but now, after three days, it just sometimes hurts. What might be there? I think it's not worth going to the doctor or calling an ambulance because now the pain is dull and pulsating.