Scheduling a same-day appointment for an illness can be challenging but is often possible with some flexibility and persistence. Many healthcare providers keep slots open for urgent care or last-minute cancellations. Calling your doctor's office early in the morning right when they open can increase your chances of securing one of these spots. Alternatively, many practices now offer telehealth services that might not require an in-person visit and can be scheduled on short notice.   Additionally, urgent care centers are a viable option for same-day treatment needs, especially when dealing with non-life-threatening conditions that still require prompt attention. While not a substitute for regular medical care, urgent care centers can provide quick access to medical professionals and relief for acute symptoms.