THi, I had gone through your question and understand your concerns.
It looks like infected BArtholini 
cyst... Things like an infection, thick mucus, or swelling can block a 
Bartholin gland duct and cause a cyst. Some Bartholin gland cysts go away without treatment. 
You can take a nonprescription pain medicine such as 
ibuprofen (
Advil or 
Motrin, for example) to relieve pain. To help healing, soak the area in a shallow, warm bath, or a sitz bath. Don't have sex while a Bartholin cyst is healing.
If the cyst is infected, it may break open and start to heal on its own after 3 to 4 days. But if the cyst is painful, your doctor may drain it. You may also need to take antibiotics to treat the infection.
Wish you good health. Kindly regards