My left labia majora is swollen. The fluid build up gives it the resemblance of a bartholin's cyst, but there is no cyst there. I know this because i have had a bartholin's cyst before that had to be drained. The gynaecologists i saw also confirmed that its not a bartholin's cyst, they were unable to diagnose it. I have no other symptoms other than the discomfort while walking or sitting up right. I have been trying sitz baths and it doesn't reduce the size. The size gets bigger after intercourse. Any idea of what it could be?