1 Use moderate intensity, which is sufficient to improve cardiovascular fitness, muscle strenght and flexibility. 2  Perform exercises regularly: cardiovascular exercise: 3 to 5 times per week, strenght training: 2 to 3 times per week.
The pregnancy starts from the first day of her last menstrual period. Normally 2 weeks before ovulation. An ultrasound is the most accurate way to determine pregnancy dates. So yes, she can be 6 weeks and 3 days pregnant even though you only met 5 weeks ago because two of those weeks were before conception.
Definitions for gestational age and birth weight. Gestational age can be calculated by the date of the last menstrual period but also by examination of the newborn infant using the Dubowitz or Ballard score. The Ballard score is an abbreviated version of the Dubowitz score, especially useful for estimation of gestational age in premature babies.