"unprofessional behaviour at Kings College Hospital"

I am writing disgusted and anger with the lack of professionalism of some of the staff that was brought to my attention. I was attending my fiancée's 13 week pregnancy scan with her and my fiancée's mother and it has been brought to my attention that some of the members of staff, apparently trainees, were making personal remarks about myself and stating such things like "why is she with him" and calling me immature amongst themselves.

I am furious about this as it's judging someone who said very little the whole time I was there. Only speaking to make a joke with my fiancée to help her through the day. I would like to know what action to take as im technically not a patient, but I am very disappointed