What Is Histamine? Histamine is an important part of your bodyâs immune response, but high levels of the chemical compound can cause health problems. Histamine is a chemical produced in cells throughout the body as part of the bodyâs inflammatory response to allergy, infection, or injury. When damaged or exposed to allergens, cells in the skin, nose, throat and lungs release histamine, resulting in pain, itchiness, redness, runny nose, and wheezing.
37 Weeks Pregnant. Your baby is the size of a large cantaloupe. Your doctor may check for labor signs, while your baby prepares for birth by sucking, turning and breathing in the womb. Your doctor may check for labor signs, while your baby prepares for birth by sucking, turning and breathing in the womb.
Near the end of your pregnancy you may be uncomfortable or anxious to see your baby. But remember -- you want to be sure you deliver a full term baby if possible. How long is full term? Pregnancy lasts for about 280 days or 40 weeks. A preterm or premature baby is delivered before 37 weeks of your pregnancy. 1  Extremely preterm infants are born 23 through 28 weeks. 2  Moderately preterm infants are born between 29 and 33 weeks. 3  Late preterm infants are born between 34 and 37 weeks.