Even with recurrence in the same spot, herpes is unlikely.
Since it's near your molar teeth, it's possible you're dealing with repeated minor trauma. Next time it happens, consider seeing your dentist. If s/he agrees herpes seems possible, the sore can always be tested for the virus. I'm betting that such a test would be negative.
Yeah I'm starting to think its herpes as it keeps coming back in same place like blisters
Rarely if ever. Recurrent sores in the mouth usually are canker sores, unrelated to herpes.