What are the most common signs of being pregnant?

A fetus in your uterus.

Also a positive pregnancy test.

A positive test

Some other symptoms are:
-Breast Tenderness
-Fatigue
-Frequent Urination
-Nausea
-Dizziness and/or Fainting
-Food Cravings, or Aversions to Foods
-Sensitivity to Aromas
-Morning Sickness
-Heartburn and/or Constipation
-Mood Swings and Irritability
-Low Back Pain
-Bloating and Weight Gain

More detail can be found at the source!

in my expierence a positive hpt.

unless you dont find out until your about 6-8 weeks along the symptoms dont usually come until AFTER you know your pregnant.

but the most common symptoms in EARLY pregnancy can easily be mistaken for pms.