I know how you feel, I too have an issue with starting IV's. When I was in the hospital I had nurses that were unable to find my veins and I was traumatized, now I am woried about missing on my patients! My instructors keep telling me that with practice I will be fine. I have never felt the pop either, but I usually get a flashback, but I have a hard time threading the catheter without blowing the vein, any help with this?