I'm planning to visit an OB/GYN for the first time, but I don't know what to prepare.

My menstrual cramps tend to be quite severe, so I'm confused whether I should just endure them or if I need to go to the hospital.

Someone recommended Dr. Jeon Dong-soo at Chunhae Hospital among the OB/GYNs in Busan; has anyone actually visited him?