Terminated over HIPPA Violation

I was fired from a mental health agency because I was told that I violated HIPPA regulations. I faxed a document relating to a patient's self administration of meds. I was not given a fax number, so I used the rolodex at the agency to look up the fax number to the family care home. The family care home had 3 fax numbers as they have three houses. I was told by the care home and a supervisor that this must be faxed by the end of the business day. I called the care home where the patient lives and the person who answered said he was new and did not know the fax number. I called another number from the rolodex at the same care home where a woman told me that the other house was having issues with their fax machines. I spoke with my supervisor who told me to go ahead and fax it to all three houses. I was then fired for a HIPPA violation. I was not given a termination letter or shown the section of HIPPA that I violated. Is this termination legal? Should I seek counsel?