So I Had Umbilical Hernia Surgery 2.5 Weeks Ago. 3

So I had umbilical hernia surgery 2.5 weeks ago. 3 days ago my palms started itching followed by feet. The itching is very intense almost to the point I am contemplating cutting them open to relieve my symptoms. Anyways my theory is that toxins have built up from all the medication and have build up in my hands and feet, is this possible? I have applied every type of cream and taking OTC allergy meds. What could this be?