Skin crawling 2 months pp

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My skin is crawling, there's no rash but its driving me insane. I'm constantly scratching and it occurs  more at night when I'm trying to sleep..im.going crazy losing sleep. I'm 2 months pp next week. Help, anyone experience or know of this. I read it can be my hormones. What can I do? How long will this last for? Do I call my OB and not my family Dr?