Red spots inside mouth on lower lip. No pain no blisters...They are smooth just noticed last night. Almost back to normal today. Is this oral herpes?

Not oral herpes. Oral herpes is painful and also would not resolve in such a short period of time. Sometimes the small salivary glands i the lips can look like small red spots. If it resolves on its own within the next 24-48 hour then i wouldn't worry about it.
Doubt it. Herpes is usually very painful so i doubt this is what you have. Unfortunately I am not sure what you have. If it happens again i would either see your dentist or a dermatologist.