Hi I'm new to all this and I received my Accu-Chek Performa Nano this morning from the SN. I tried it out at lunch time, pricked my finger ok and held strip to blob of blood but couldn't get a reading. I kept pushing at the prick area to get more blood out but nothing happened. I tried again on a different finger, still nothing. Has anyone else had this problem? What am I doing wrong? Need help,please.