Should urination be difficult after Breast augmentation surgery?

No.  This is not normal, but not uncommon.   There could be a couple things going on here.  It is most commonly due to sensitivity to the narcotic pain pills or anesthesia.  Stopping the narcotic pain pills or sometimes at least by cutting back on how much you are taking, usually solves this problem.   The second and less likely cause may be a UTI (Urinary Tract Infection).  This usually also includes burning when you urinate and often a fever.  Either way, the best thing to do is to call your Plastic Surgeon right away.DiscoverTheBeauty.com 

Once your bladder becomes overfilled or if you are on narcotics and some other medications you lose the urge or tone of your bladder. Typically an urgent care center does an ultrasound to see if you have significant residual and if so will put in a temporary catheter to drain your bladder. 

Thank you very much for your question.Trouble urinating is typically a result of anesthesia or medications after surgery, and typically gets better shortly after the medications have worn off.However, one of the things that can cause urinary trouble is a urinary tract infection (UTI).  I would contact your doctor and discuss this issue.  Best of luck!