I had a breast biopsy done. Did you mean that the biopsy was done while you were in the mammogram machine? In my case, I had an ultrasound done after the questionable mammogram. At that time, they pinpointed the spot. Then the surgeon marked the spot, inserted the needle and drew out a sample for testing. I didn't find that it hurt much at the time, but afterwards, it was a bit painful. I'm sorry that you fainted. Do you think that now you are aware of how the procedure works, it will be a bit easier for you? I'm also sorry that your partner forgot about the appointment and that he didn't seem concerned about how you were doing. A little understanding would help.
Feel free to PM if you want to talk about it.