Hi Doctor. I Need Clarification In The Band Aid Issue.

Hi Doctor.
I need clarification in the band aid issue. Last visit when I did my confirmation test at 13 weeks period which was negative with p4 generation test. When the nurse put me the band aid the blood little flowed from the finger then I removed and put it in the trash when the nurse noticed she ask me to put in different hazardous .I think mostly I picked up and threw my band aid there it was about 10 min in testing .I realize I am not sure whether I picked up the right one .Please asses if there is any risk of transmission any blood from other people band aid can possibly transmit to my finger which was pricked during the testing.

Thank you