What Are The Chances Of Healthy Pregnancy In Women With Positive ANA?

Hello My wife is 28 and had miscarriage twice...she s pregnant again in her 9th week. ..she was been diagnosed with ANA and the doctor advised her to take aspirin 75...Further she was been asked for ANA profile And anti d s dna... How are these tests helpful in ascertaining the disease...and can the pregnancy be saved with medication if the results be found positive. .?