Hi, I had two bartholin cysts at around the same age as you, many years ago now, but I remember well the swelling and the pain. I had surgery after months of complaining and the surgeon created an extra "hole" for the excess fluid to drain, it's never closed up and I never had problems once he did that. It's a tiny area to small for anyone to be wondering at if up that close lol.. I was put on antibiotics for ages from memory they were called Flagyl. Endep or amytriptyline was used for the pain but I developed side effects, tingling of the nerves which made it unbearable. In later years for another condition I was on 10mg endep it's the blue tablet and I didn't get the tingling with it. Nerves can heal and I'm so sorry you have that buzzing sensation, read up on amytriptyline / endep side effects and maybe it's what is contributing to the buzzing as it sure did to me. I lived in Central London for 15 years, if you can get a referral to a Dr Kenny who used to have rooms at the Lister hospital in Chelsea, he literally saved my life with other gynea problems I had in later years.