Absolutely, but that story is pretty preposterous. I mean, just look at this diagram.
http://doctorstock.photoshelter.com/image/I0000Jf0EVDit1rc
This person would have had to been stabbed in the stomach
and the uterus or fallopian tube. The sperm would have then had to either travel down the intestine and into the puncture of the uterus, or the knife would have had to carry sperm from the stomach to the uterus. That's on top of the sperm surviving all the acid/bile in your stomach and throat, and whatever saliva does to sperm.
I doubt the authenticity of this report, and if there is an medical journal about it, these people were obviously experimenting with LSD when they wrote it.