i worked a year in med-surg, then transferred to L&D. i had a year experience in OB as a nurse tech doing postpartum care, which i think was invaluable in my knowing the department before starting. our unit is LDRP and we average 200 deliveries a month. i felt the same way about med-surg, when i was there i couldn't wait to get back to OB. however, i think the skills i acquired in med-surg were invaluable to my current setting. those basic assessment, prioritization, and time management skills are needed wherever you go.
my first six months in OB has been great, but intense. one thing i have learned is that it truly is a specialty. it will take a long time to feel competent, the key is to having support from your co-workers and your charge nurse (which thankfully, i do have). most of the time outcomes are great, but your mind always has to be thinking the "what if" scenario and planning for that. when things go downhill in our department, it happens quick and can be very overwhelming.
all that being said, i feel very lucky and privileged to work where i do, and i learn something new from each patient, each labor, and each delivery. i am happier now because i'm working where my passion is.
i say go for it when you get the opportunity, but use this time where you are at now, to build your skills and improve on those. good luck to you in your endeavors!