I've noticed a golf ball size lump on right side of vagina wall and had for weeks, now its bigger and harder and very uncomfortable during sex. help!

Bartholin cyst: You most likely have a Bartholin cyst. The gland itself produces a fluid which moistens the outer genital area. If the duct draining the gland becomes blocked, then a cyst forms. Cyst problems: size & pain issues - your experience, & abcess. Cancer is rare - 1 in a million chance, & after perimenopause. Your treatment typically requires a minor surgery procedure. See your Gyne. Hope that helps.