The Drs Think My Granddaughter Might Have Mumps But Not

The drs think my granddaughter might have mumps but not sure haven't got all results back yet. Was wanting to know what should we do until we get the results. She wants to go outside and play is that ok.? She feels good at times then she starts hurting for a little bit. Like her head hurts if she lays down but not when she's up. She has younger siblings does she need to be around them