My vestibule bulb is red and it burns and hurt...

Causes and treatment above symtoms:

In fact, there are many reasons for this complain and  you should do a medical examination to identify them. One of the most famous causes is a Bartholin’s cyst, which is common among girls and is mainly a gland located on the sides of the vagina and secretes a liquid to facilitate and lubricate the vagina. Sometimes a blockage of the opening of this gland occurs, which leads to the accumulation of its secretions and its enlargement over time, and the treatment of the cyst depends Bartholin on the size of the cyst, the amount of pain it causes, and whether the cyst is infected, either antibiotics or sometimes surgical removal.

diagnosis:

It is done by a specialist in obstetrics and gynecology, who takes the medical history, performs a clinical examination, and diagnoses it by identifying the cyst through the examination.

Associated symptoms:

A painful lump

Discomfort when walking or sitting

Itching

Other

Advice :

It is preferable to go to a gynecologist for evaluation