wikiHow to Raise Low Blood Pressure. Low blood pressure â often defined as lower than 90 mm Hg systolic or 60 mm Hg diastolic â is a common medical condition with a variety of causes, including pregnancy, heart problems, some severe infections or allergies, blood loss, and even dehydration.
You may have an ultrasound between 18 to 20 weeks to evaluate dates, a multiples pregnancy, placenta location or complications. It may also be possible to determine the gender of your baby during this ultrasound.
Vaginal Ultrasounds are the most accurate and can tell you at even 12 weeks, with a regular tummy ultrasound they usually can't tell until at least 16 weeks, but try to schedule your ultrasound around 20 weeks so everything is clearer.