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.
You can see from 4 weeks onwards how many babies are there, I had an early scan due to a bleed at 4 weeks and there is only one baby. You can know the sex from 14 weeks as this is when those organs are fully developed but unless you pay for a private scan you wont be able to find out until your 16-20 week scan.