Question: how can you tell if someone is pregnant?
Answer: Slight bleeding. One study shows as many as 25% of pregnant women experience slight bleeding or spotting that is lighter in color than normal menstrual blood. ... 
Tender, swollen breasts or nipples. ... 
Fatigue. ... 
Headaches. ... 
Nausea and/or vomiting. ... 
Food cravings or aversions. ... 
Mood swings. ... 
Frequent urination.