It's usually right. Congratulations (if you like cute little babies)! after a week or two, a woman can be checked again at home or at her doctor's office. If there is a medical problem that does not allow her to carry a pregnancy, she can arrange for proper treatment then. Otherwise, a cute little baby is on the way. However, miscarriages are a normal part of life, so some pregnancies will not survive to term.
Pos test. With today's test, it is unlikely to be wrong...Go see your doc and get a blood test to confirm it.