Spirometry (a breathing test that measures how much air and how fast you can blow it out of your lungs), chest x-rays, and blood and sputum tests all help to determine if your problem is asthma.
The Lung Association advises: "... uncontrolled asthma during pregnancy can lead to serious maternal and fetal complications. If you have asthma and you're pregnant, or planning to become pregnant, see your doctor." Even if you think you might have asthma, you should see a doctor.

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