In general, how competitive is it to get into an OB/GYN residency? Also, how competitive is it to get a fellowship in reproductive endocrinology / infertility? I would imagine it's highly competitive, since the pay is high and the work is so rewarding. Would it be possible for a graduate of an osteopathic OB/GYN program to get such a fellowship? I know of a DO OB/GYN who did his residency at PCOM and his REI fellowship at Pennsylvania Hospital, but I don't know if this was just a fluke. Any other information would be appreciated.