The biggest sign is a missed period of more than a week or two. Sometimes you'll feel sick in the morning, strange sharp cramps or pains in your abdominal areas. Increased sense of smell (sometimes to the point it makes you sick with some things). Strange cravings. Feeling tired throughout the day when you normally don't. Possible mood swings. Slight weight gain (not the same for everyone). Swelling around joints like the ankles.
no period, morning sickness, you smell stuff that you never smelt before and not it a good way....your extra crabby...but you really should take a prego test to be sure so if that way your gonna keep it you wont hurt by the time you know the doctors office give free prego test