Am I able to have a shoplifting charge dismissed?

I am a 39 year old female. I am employed with Veteran Affairs. I recently had shoulder surgery x2 weeks ago and afterward started 5 new medications ranging from pain to hormones and am also on antibiotics for pneumonia. I have never been in any trouble. I impulsively shoplifted two shirts from a department store and I had the money to purchase this item. I really do not know why I did it. I am very fearful that I will lose my job and security clearance once my offense reaches the light of day. Is it possible that these new meds played a part in my wreck less decision to commit petty theft? And what are the chances of having this charge dropped?