A supportive bra and proper bed rest are also important. This may feel like a painful pang in your pelvis or a cramp down your side that can last for several minutes. The glands themselves have no purpose in a medical sense called vestigial. Squeezing or expressing the glands in order to empty them out could cause inflammation and discomfort. Secondary tracks may open onto the skin, allowing the cyst to drain a foul smelling discharge, which is known as a pilonidal sinus.