with an ultra sound they can tell at about 2 1/2 weeks. with a test it can pick up as early as 4 weeks.
whens the earliest to tell if your pregnant. i've been feeling very sick to my stomach at different times of the day and getting sleepy at weird times. also feel like have very little energy. it's been probably about three weeks since we had sex and for about a week now i've felt like this and i don't know what to do!