Talk to a therapist, write your feelings in a journal, get a good amount of sleep, exercise, eat healthy, don’t isolate yourself- socialize, meditation, create and stay in a routine, clean and organize the space around you, relax by doing things you enjoy (warm bath, watch your favourite tv show, etc)
Leave. Your date should definitely respect your boundaries. If they don’t that means they don’t respect you. Have a good one :)
Damages self esteem, increases risk of anxiety, and increases likelihood of risky behaviours.