It's unusual, but not typical, of Crohn's (proper spelling, folks if you need to look up info down the road) Disease to present as only pain, without diarrhea in the beginning. Sure, it's possible, but typically pain in someone with biopsy-proven Crohn's is accompanied with diarrhea & fever, or vomiting, if scar tissue is causing an obstruction. Later in the course ( weeks, months, years) chronic pain can occur & is thought to be from inflammation.
In a premenopausal woman with right lower belly pain without diarrhea I would be wondering about GYN issues or irritable bowel syndrome.
The most frequent cause of belly aches in women, however--in my experience as a rural surgeon--tends to be Irritable Bowel Syndrome, aka IBS. Which some folks then convert on their own, or with poor explanation from their doctor, to IBD (inflammatory bowel disease)/Crohn's.
Without knowing lab values & the actual story, it's tough to say what's going on. I always recommend finding a board-certified doctor and ask why any test is being done, as well as alternatives & risks. I also tell my patients what "Plan B" is in case a test doesn't give an answer.
But that's me, & some doctors are very different. Depending on where you are in PA, there are some great docs (I trained in Phili, so I'm biased.
Good luck!