It means that either one has inflammations or infections in the body.
No, it is not serious. It is a very non specific test and it should be entirely corelated with symptoms.
It indicates that there is inflammation in the body and one must consult a doctor immediately.
It means shape or size. It can indicate that you have atypical cells and can further indicate a serious illness.
No, a blood test cannot detect vaginitis. Consult a gynecologist who will help you detect vaginitis at the earliest.