Question: how to tell if you're pregnant or just gaining weight?
Answer: Nausea. This is often one of the first signs of pregnancy. ... 
Constipation. Progesterone, a pregnancy hormone, makes the bowels move less quickly. ... 
Frequent urination. ... 
Fatigue. ... 
Spotting. ... 
Headaches. ... 
Backaches. ... 
Dizziness.