Thanks for the query.
As you are having breast lump along with discharge better to consult gynecologist or surgeon once and get examined to find out the possible causes for your problem.
For more details:http://srsree.blogspot.in/2013/02/nipple-discharge-1.html
Better to undergo hormonal evaluation for prolactin
devices can sometimes affect the menstrual cycle and hormonal levels.
So if that is found to be a cause for your problem better to get removed.