I think it's worth noting that when you had to attend to your husband's back you did it and didn't run screaming from the room. Afterwards you got a bit shocky but the job was done. It might be helpful to look back at any emergency situations you've been in your life and how you reacted. If you could keep it together and do what needed to be done, even if it didn't involve a lot of blood and gore, you can probably handle yourself in an emergency. If you get the shakes later, that's not so much of a problem.