My physical and mental health is also in the gutter since this PhD. Been in and out of hospital the past months. Just at the very end of this experiment, I mistakenly dropped the samples. That’s at least £800 down the drain. Dunno how I’m going to tell my supervisor. Tbh, I don’t even have the energy to cry.
in Confession
Connotare 
I understand you and PhD. It can be very draining especially if you have a bad supervisor in the UK. Just find a way and tell him or her soon, so you can get more samples. I hope you still have some time on your side, the time for new samples to come to your lap won’t be too long? Carry your supervisor along. I wish you the very best.