when do you get blood work when pregnant
That sensitivity can make a big difference if you want or need to know whether or not you're pregnant very early, Dr. Roshan says. If you do a pregnancy test before you miss your period, the result may be negative with a urine test but positive with a blood test.. When you're at risk. Early pregnancy tests aren't usually necessary, but they can make a difference for women at higher risk for miscarriage or ectopic pregnancy.