PLEASE ADVISE; My Girlfriend Allows Me To Do Anything To Her But Does Not Allow Me To Kiss Her

UNEDITED:
Please this thing has been disturbing my mind and my relationship for weeks now. We started dating 2 weeks ago.

Two days after we started dating, she visited me and we romanced and when I tried to kiss her, she refused saying she saw a documentary where they said there are so many germs in the human mouth and that such bacteria is transferred through kissing a lot.
We had séx and we have had séx about 7 times and always she stops me from kissing her but then she allows our body to connect any other way.

Please is her reason genuine or is she hiding something from me
Plz serious comments as you can see am serious