Petechiae (?) on legs. Should I be worried? Can petechiae vanish when rubbing it?

F24, don't know weight but probably normalish. Fluoxetine 40mg/day. I have severe atopic dermatitis, IBS, anxiety disorders and had pulmonary embolism a few years ago.

So I have a huge fear of leukemia because of my OCD. My whole body is covered in keratosis pilaris and I also have a huge amount of cherry hemangiomas. For the last year or so I have noticed these red spots in my legs. Non palpable, sometimes raised or bumpy, usually not and pinkish-purplish colour. They come and go. My CBC was normal a few months ago. The question is, can petechiae vanish when rubbing it? These scary spots disappear if I scratch the skin with something. If I scratch the spot, it vanishes completely within 10-20 minutes. I don't understand what these are. Irritated pores or hair follicles? Or petechiae? I try to add a pic to the comments.