Ok so i just sat and expressed off 100ml while skimming through bb then noticed that i could feel and see the milk pumping but not coming down into the bottle! then a strange noise?

the milk was pumping into the motor of the pump as ther was a kink in the suction tube!!! should i throw out the milk i collected? this suction tube is from the hospital and essentially the milk that fel back down would have gone in it and/or the motor! i just worry about bacteria.

now my pump is making strange noises, has anone had this? how will i fix the pump?