Could a hernia cause vaginal discomfort and burning? er doctor told me i may have hernia didn't have sonogram though?

Not that likely: But maybe. A hernia can allow internal organs to come out and into the hernia sac. In women, the fallopian tube and ovary can get into the sac at times. Tugging may occur and cause discomfort, but the exact symptom would be hard to predict. A ct scan or us might help define if this were happening. Other organs that might get pulled into a hernia include bladder and bowel.