Employee reported injury on 3/19/22, EE felt an initial twinge in groin area on 3/12 and again on 3/19 while conducting clean up work. Went to physician on 3/19, returned to work performing regular work activities as a Control Room Operator. Referred to a specialist and an operation was conducted on 4/15 for a hernia. Has returned to EE's next scheduled shift 4/18/2022 as CRO.