Restore your purchase
Open Settings from the gear on Today and tap Restore purchase, signed in with the Apple Account you bought it with. Nothing to restore means the row is gone: you already have it.
Export your data
Settings, Data, Export data. A zip of JSON and CSV, free whether or not you buy.
Delete your data
Settings, Data, Delete all data. It is gone from the phone and the watch. We hold no copy to delete: see
Privacy.
Medical questions
We cannot answer them. Talk to a clinician or a pharmacist about medication and symptoms.