When should my wife take her pregnancy test? She had a light period in may. June she had none. Started to bleed light 7-4-12 but stopped within 24 hrs

Pregnancy. Now- today. If the test is negative, repeat the test in 1 week. If positive she needs to see her doctor for evaluation. Early pregnancy problems (ectopic, fetal demise, placenta previa)needs to be ruled out. Please take Folic Acid 1mg per day.
Now. She can test herself as soon as she has a missed period. Sometimes you need the blood test to really confirm or rule out the pregnancy.