Hello, i scraped the side of my palm on a metal piece of the facet while cleaning my bathroom sink. it looked like only the surface skin was scraped off. i ran the scrape under cold water until it stopped bleeding, then i put on a waterproof band aid to cover it for all of yesterday. it felt fine until i removed the band aid at night..the side of my palm started to feel a bit of numbness...i thought it would subside so i just went to bed. this morning, it was still numb. should i be concerned? or is this normal? (i m 26 years old, no allergies, no major illnesses)