Long shot but gonna try!

Vanessa • 21. 1 baby, due with #2 02/07/20. Married

We have a 10 month old German Shepherd girl, and we were out of town for about 12 days and we came back to see these on our pup.

There are about 6 to 7 in total all around her face. She has an appointment next Wednesday at the vet to find out what they are. In the meantime , has anybody experienced anything like this and what do you guys think I should put on them?  I read up on about Histiocytomas, And to me and my husband they look like those but I’m unsure of what I’m able to put on them until her appointment.