Are both OK: Hoping you're not in discomfort with/on first day of healing.
The phrase "first day of healing" is not natural. What is the context? Is it the next day after someone had an accident, or had an operation, or something like that?
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The phrase "first day of healing" is not natural. What is the context? Is it the next day after someone had an accident, or had an operation, or something like that?