Does pregnancy cause increased levels of anxiety causing hormones, as a part of normal pregnancy in females?

i have found that i can only handle a lesser amount of stressors (i.e., completing everyday household chores, familial controversy over financial problems, learning of various additional medical aspects of pregnancy, and caring for aging parents). does anyone know exactly what hormones are secreted during pregnancy, that may cause this increased anxiety? and, are there suppliments to combat these effects?