Can my girlfriend catch my hereditary disease by drinking my semen?

I have BONE tumors (extra bone growth) that are benign,I was born with them from my fathers' side of the family . My uncle had them and so did my father but none of my brothers and sisters have them or anyone of my cousins for that matter. Its called multiple hereditary ostero-something.its a really long name, the problem is my girlfriend won't swallow my semen any more after six months of swallowing every day since she developed a bump on her arm after the doctor already told her it was nothing serious just a scar or keliod or something. She is scared to swallow my semen because she says its swallowing my DNA and she afraid to catch my hereditary disease.I told her she cant catch it--you have to be born with it it is not contagious, She does not have BONE tumors and neither did any other of my girlfriends in the past who swallowed my semen every day . one for the six years I was with her- Am i right that she can't catch my hereditary disease by swallowing my semen?