Hi..I Have A Problem With A Cyst Like Lump .

Hi..I have a problem with a cyst like lump . I had a yeast infection from antibiotics and then got my period. The symptoms of the yeast infection seemed to go away. My husband and I had sex and the yeast infection seemed to come back worse. I tried a few at home treatments and did the one day monistat treatment, which did not work. But now i have a bump on the left side -- it is a hard lump and is slightly painful at times. Not all of the time. It does feel better with warm compresses. Could this be the Bartholins cyst? It is about the size of a small marble now.