My finger won't stop bleeding?

I was working with my polymer clay and was using the razor blade to cut some of it. It slipped and made a 1 inch cut on my finger. I ran to the kitchen and washed it with soap and hot water. Then I grabbed a paper towel and I put it on the cut and went to my mom. She put Neosporin and wrapped 2 BandAids around it. About 15 minutes later it started to bleed through the BandAids. My mom took off the other BandAids and put Neosporin, a gauze pad, and a BandAid around the cut. It really hurts right now and it is still bleeding. My entire arm feels cold and the finger is throbbing. What should I do!?!?