bad body itching???

Ella

I'm 15 weeks pregnant and for like three days been having the craziest body itching at times, mainly my chest (not my boobs), I even ripped off like a whole piece of skin and have this big scab, is this considered normal? this is my first pregnancy so not sure what's normal and what's not. I have a belly appointment on the 6th so I won't see my doctor till then