I concur with what others have said here. If there is any doubt or uncertainty, then you are not "truly" ready to go through yet. I also don't want to tell you what you should/shouldn't do, it's up to you. However, with that said and after reading your additional posts, I think it is a nice thing to consider your husband and anything that you can do to mitigate the loss. Furthermore, in regards to SI, I don't think there is ever a true instance of completing overriding it such that it would never be there, but there is an emotional state of mind and frame of mind where like @Read123456788 said that the will to die becomes stronger than the will to live. I have been in that state of mind before, but due to lacking an effective method to end things, I didn't quite do it then (I didn't have firearm in the past, only about a year ago).