Itchy spots on chest, tummy and back! TMI PHOTO

Holt • pregnant with #1 👶💜 due October 😍💜

Help! woke up one morning from scratching all night to my chest, tummy and back covered in what looks like chicken pocks to me! Ive been using the palmers 3 products for my tummy and boobs for stretch mark prevention, the day i forget to use it i wake up the next day and its like this :S is this normal pregnancy or an allergic reaction?