Yep, it's pretty common. Sometimes people don't feel acute pain at all, but a kind of soreness you feel from overworking your core muscles. That's why they go to get a massage to help them feel better.

We were taught several tests to do in this case, and immediately refer the patient to the ER if they are positive. From the memory, soreness/pain on the right side of the abdomen if the left side is pressured, and soreness/pain increasing when the pressure is removed. And some cases can apparently be palpitated directly, but I forgot what exactly it should feel like.