You must visit GYN-ONC. It can also be a cyst, I am saying it because of its location. If you neglect, it may get larger and worse the situation.
Cervical Cancer is now-a-days being a very big problem. So, you must have proper tests immediately.
For more information on Diseases and Health Issues like Cervical Cancer, Autism and Attention Deficit Hyperactivity Disorder you can visit ALCAT.