Anyone ever seen something like this

I get these spots on my face and they usually last no more than 4 days. They look like blood blisters. Can't feel them. Don't even know they are there til I see them in the mirror. I saw a dermatologist last week and her and another dr had No clue what it is so they did a biopsy of it and send it to Walter Reed medical center to be tested. Does anyone get these slots also