V.W.
My first AFP came back that way. My doctor called and told me, and reassured me that a very high percentage of the tests result in false readings the first time they are done. To relax and give it a week or so and we'd redo the test. We waited 10 days or so, did another test, and it came back fine. It was my first baby. He is perfect. He's almost 12 yrs now.
It is just a screening test.
Do some research online, make a list of questions, and call your doctor. You might ask for an appointment to go over some of your questions. If you have questions about something like this, your doctor is the best place to go for answers. Always write them down, b/c you will forget when you are talking face to face with the doctor. And new info he will give you will raise more questions after you get home.... so do some research in advance so you'll have some of the questions ready before you go.
Good luck.