while your visa is prosses you can't leave the country. so what you need to do is. keep the visa with you and travel to your country on your old visa if you have any time left on it. when you come back to doha use your new visa to enter the country they will give you three months to do your med and finger print. the med takes about one month to be done and the finger print about four days and the passport stamp with the new visa one day. goodluck.