I observed that my left eye is drooping..is that a problem?

Could be : Droopy eyelid can occur in response to allergies but also could be from a problem in eye muscle or nerve to the eyelid muscle. The correct diagnosis requires an exam by an ophthalmologist, an the doctor.

Maybe: If you have pain, blurred vision or unequal pupils seek medical attention promptly. If this is gradual, longstanding and painless you can see an ophthalmologist on a more leisurely basis.