“Miss” denotes a single female. “Ms” or sometimes even “Mz” refers to a female without denoting marital status. It can be seen as more polite or accurate.
If you still use a nebuliser for taking asthma medications – whether day-to-day or just when symptoms flare up – talk to your doctor about making the switch.
If your story has a narrative voice that's meant to sound young, conversational, or modern, the word whom will call attention to itself and sound out of place.
You should take the emergency contraception pill as soon as possible; up to 120 hours (5 days) after unprotected sex. Emergency contraception pills are free to.