Im a private duty nurse, i administer Tobramycin via inline vent neb tx to my pt on a daily basis for the last 3 months. Could being in the room when the neb tx is running/ handling the medication interfear with my birth control? Im already over a month late, but the home tests have been negative, and i take my BC ritualisticly. If so what sort of effects are associated with Tobramycin and pregnancy?