Itching!!!

A
Literally every inch of my body itches! From my tummy to my hands and back and breast and especially the back of my thighs... I just cannot get any relief! I switched to Aveeno body wash for itchy dry skin and softer lotions and nothing is helping. My mom suggested maybe it's my prenatal vitamins brand but what do you ladies think? All of this began about 3 weeks ago and is just getting worse!