No..

Herpes blisters contain clear fluid, not blood. Herpes blisters orally are usually found around the lips rather than inside.

Here's some information about oral herpes and canker sores, which are NOT herpes related.
http://www.pueblo.gsa.gov/cic_text/health/fever-blister/fever-canker.html


For lots of good general information about herpes, you should take a look at the free herpes handbook from the Westover Heights Clinic.
http://www.westoverheights.com/genital_herpes/handbook.html


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