Does it show up on your Pearson Vue dashboard (be patient, there is a delay while it redirects multiple times):
Are you able to contact Pearson Vue customer service via chat and/or phone? See below page to contact them:
https://home.pearsonvue.com/microsoft/contact
You shouldn't received a confirmation email from Pearson Vue, plus typically they will send reminder email.
You may also ask a question in the Certification forum:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&forum=mcp
If the above was helpful please click Accept Answer.
Thanks.
-TP