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.
If you're measuring large, you can request a dating scan which will determine whether your estimated due date is correct and whether you really are carrying twins. Most women would not have an ultrasound scan until later, at 11 or 12 weeks of pregnancy.