Food is generally the most common cause of anaphylaxis. Common food triggers include nuts, shellfish (shrimp, lobster), dairy products, egg whites, and sesame seeds.
The most common time for a scan is about 19-20 weeks of pregnancy. This is the best time to check the baby's physical development. Ultrasound scans can be done at any stage of pregnancy, with signs of pregnancy being seen as early as 5 weeks.he most common time for a scan is about 19-20 weeks of pregnancy. This is the best time to check the baby's physical development. Ultrasound scans can be done at any stage of pregnancy, with signs of pregnancy being seen as early as 5 weeks.
The hCG levels will peak at about 8-12 weeks of pregnancy and then will decline, remaining at lower levels throughout the remainder of the pregnancy. If the levels are questionable, an ultrasound scan should be used to diagnose the pregnancy outcome.