Question about 1095a, can anyone help?

Me and my sons mom live together. We are not married. She received a 1095a through the marketplace. Can I still claim him as a dependant as head of household?

 

I think we messed up... she filed her taxes as single and included the 1095a information for our son but did not claim him as a dependant. I filed as head of household and claimed our son but did not include 1095a on my return because she did the 1095 for him on hers... 

 

 

Did I mess this up? Any help very appreciated.