Feeling weak for several days can have many causes, so it's important to monitor your symptoms closely and seek medical evaluation to determine the underlying reason.

• Since weakness can be related to nutritional deficiencies, infections, chronic conditions, or medication effects, a thorough assessment by a doctor is recommended.
• If you are taking supplements like Calcimax K2 (which contains calcium, vitamin D3, magnesium, zinc, and vitamin K2), ensure you follow the prescribed dosage and inform your doctor about all medications or supplements you use.
• Watch for warning signs such as chest pain, severe shortness of breath, sudden confusion, or fainting, which require immediate emergency care.
• Schedule an appointment with a general physician or an internal medicine specialist who can perform a physical exam, order relevant blood tests, and guide appropriate treatment.
• Meanwhile, maintain hydration, rest, and avoid strenuous activity until you have a clearer diagnosis.

If you want, I can explain possible causes of weakness or what tests might be done. Please consult a doctor promptly to ensure your safety and proper care.To narrow down potential causes, we will need some more information.Can you please tell me if you are male or female?