Chronic Bartholin Gland Cyst Problems

For the past 2 years now I've had CHRONIC problems with my Bartholin Glands. One grew to the size of an orange and had to be removed a year ago via emergency surgery and my doctor removed the gland altogether. Now I have an episode with the other gland about every 2 to 3 months and all my doctor does each time is gives me an antibiotic and sends me home to wait for it to burst. I now am having all kinds of problems and I wonder if something else is not going on and would like to hear from anyone who has had the same challenges. It feels like someone is ripping my insides out during initial penetration when having sex and I almost always have this heavy discharge. I've been tested for every STD on the planet and my tests have all come back negative. I am also having pelvic pain as well and my periods come about every 2 weeks now. I go to the doctor and she keeps telling me it's stress and that I have a yeast infection and prescribes me some medicine and sends me on my way. I'm SO frustrated and frankly scared at this point!