Is it my fault?

Do you ever wonder "what would have happened if I wouldn't have done that? What if I wouldn't have said that?" Well, that is exactly what I am wondering right now. I accidentally forgot a pair of scissors one the couch last night. Today, my husband came home after working for about 12 hours and sat down on the couch. I was going to my car to get something out of it. All of the sudden, I heard my husband scream with fury. I rushed inside the house, thinking that something really bad had happened to him or my newborn. When I asked him what happened he replied in a very aggravated voice "something just stabbed me on the butt!" As he was looking through the couch, he found the pair of scissors that had just stabbed him. I took the scissors and immediately proceeded to put them away. However, as I was doing so, I busted out into an incontrollable laughter. I think that really aggravated my husband even more. I felt really bad for him and did not think that it was funny. It just seems like every time something of that sort happens, I burst out laughing. I don't know how to control it. I think that my nerves play a trick on me every time. I really don't think it's funny, but it's the way that my body reacts to situations like that. I really wish I could change that because I realize that it upsets people. A long time ago, when I lived with my mother, she fell in the tub and I was really nervous and rushed to help her out. However, once I saw that she was okay (that she did not have any broken bones or anything of the sort), I could not help myself but laugh. I really wish I could be able to control it, I just don't know how!