Prenatals

I knew some weird shit would happen after I bought prenatals without being pregnant. So I take one everyday even though I know I’m not pregnant (just heard it was recommended if your gonna try within 4 months) I have them at work in my drawer facing down. well I was out of the office on Friday, and I come in today and the prenatals are facing upwards in the drawer. No one else would go in my drawer besides my boss to get ibuprofen. I might add that I am a smoker so I’m sure she’s thinking I’m pregnant, and still going on smoke breaks. I know I need to quit, but If I was pregnant I would quit immediately. How do I tell her I know she saw that and that I’m not pregnant. Or should I just not care. We are very close