Well, that's annoying! Did you have a doctor diagnose the cyst and monitor it?
So, next time when at the doctor, show them. Do you get regular ob/gyn appointments? Every woman should have a pap smear once a year. So, that is a great time to get medical examination of it. It is probably still there but has changed as a B cyst can often just be a lump.
What you can do now are a few things to see if it helps. Dab tree tea oil on it (can get almost anywhere these days but definitely at health food stores), try a sitz bath (fill tub with warm water about 3 inches and soak for a bit), take a probiotic (pill form or drink one of the smoothies daily--- this will help lots of things unrelated to this like digestive health, etc.), you can try dabbing apple cider vinegar on it with a cotton swab. Those are just some home remedy ideas to try.
But I'd get it checked. Does it bother you other than just being there?
It never grew big enough to pop by the way.