mamas please help !

before pregnancy i’ve always had dry skin n extremely itchy legs, feet (in between toes) n my face would be really dry n flake but ever since ive been pregnant (im 19 weeks + 5 days) it’s gotten extremely bad to the point where my legs are flakey 24/7 itchy like crazy and my face looks like im shedding all the time with a big dry spot on the side of my mouth ! i’ve tried lotion and moisturizer daily or even multiple times a day but nothing is helping. what can i do ?? i have literally made myself bleed and scab from itching my legs