Is there a way to check whether i have carpal tunnel without going to the doctor?

Yes: Place the back of your hands together bending them at the wrist and hold them there for a couple of minutes. With fingers pointed down make the wrists touch each other. If your fingers go numb or painful in a couple of minutes then you probably have carpal tunnel syndrome. You will need to see your doctor for treatment if you have it.

Tap: With your middle finger of your other hand, tap firmly on the underside of the wrist where it joins the hand. If you have tingling running into your fingers, it is possible you have carpal tunnel syndrome.

Phalens Exam: Lift both hands to the level of your head and let the wrists just flop over so that your fingers are pointing towards your ears. Hold this position for 30-60 seconds. If you experience numbness, tinging or pain in your hands this is highly suggestive of carpal tunnel syndrome.