Check to see what your BON has to say about taking independent patient assignments in a clinical area to which you have had no orientation. Many BONs require some (although probably not much) orientation for independently functioning RNs.
An alternative is to be pulled to med-surg to act as a "task nurse," for example doing all the fingersticks, vitals, bed baths and linen changes, etc. While this is not ideal, either, it does protect you from having to muddle thru an independent patient assignment.
Funny how it never goes the other way. If you were short in L&D, I guarantee no other specialty would be forced to come fill your shift.
I was a NICU nurse with no other clinical experience, when I got pulled to oncology. I was wearing baby-themed scrubs
and had almost every family comment on my attire. I told them flat out I was pulled and had no experience in adult health, let alone oncology. The charge nurse had some explaining to do to her long-term patients and families. I never got "invited" back.
Our OB units had an on-call system to cover our own staffing needs, and we finally raised enough hell that we were no longer required to float outside of OB. And frankly, any hospitalized patient is sick enough these days to warrant a specialized nurse or his/her care.