Itchy EVERYWHERE

So when I was pregnant I had cholestasis. I started itching on my arm, and then it was kind of everywhere.

Now I’m 6 months postpartum and itching in that same spot with the same weird hive like patches. I had my period last month, my period will begin next week. I’m kind of freaking out, I took a test (because I was nervous) and it was definitely negative. I’ll take another one if I miss my period but I’m not sure why else this would be happening. It feels THE EXACT same.

Anyone have any insight?