Should I go to the ER or wait until Monday to get appointment with plastic surgeon for possible leak of breast implant? (Photo)

Best to call your plastic surgeon's office to inform them of what happened and see them ASAP. An ER would be helpful if you were experiencing signs of infection: i.e. redness, warmth, fever, tenderness, etc. 

Dear judaye,Unless you have signs of a hematoma (expanding size with bruising) or infection (redness, tenderness, fever) the ER will probably have you follow up with your surgeon. I would contact the office and let them know what happened. They will likely want to examine you and decide if any further studies are warranted. Rupturing an implant from a fall would be unlikely, but you can tear the capsule or scar tissue around the implant which could explain what you are feeling.

It is unlikely that any emergency room physician can take steps to resolve the problem.  I would suggest calling the answering service of your plastic surgeon to notify them of the problem and make certain to call on Monday morning to make an appointment to be seen that day.  As long as you do not have a high fever or signs of infection such as pain severe redness itching you should be okay until Monday.