Sherlock did not cry after John died.
Everyone else did though; Ms. Hudson, Marry, and everyone else that John knew, the ones Sherlock had no idea whose names were, because he erased the unimportant information.
Sherlock usually missed the linger of John, although he never cried, (Sherlock wasn't a very emotional person) he would replay a memory over, and over again.
Until where he reached the part when John went stiff and until the blood that surrounded him was just, red, red, red.
Sherlock didn't cry because John died, there was no need; John was going to come back; this was sure to Sherlock who whisked a finger over a petri dish which was full of John's cells.
Sometimes at night when Sherlock had checked, and doubled checked, then tripled checked to see if Ms. Hudson really was asleep, he would whisper, "Hello, John."
Once in a while would Sherlock truly wonder if he had gone insane, would anyone else dig up their best friend? He had scraped at John's grayish skin, put flakes of him in a dish and wrapped them in a battery powered heating pad.
As long as these cells lived, John lived. It did not matter that the child Mary carried was part John. It would never be John, and it was something that didn't deserve a speck of Sherlock's time. (This baby did, but Sherlock enjoyed telling himself lies.)
Ms. Hudson had started linger longer then she should, when week five of Sherlock's project (operation bring back John!) had started.
"I had gotten worried about you, Sherlock," says Ms. Hudson, "You see I figured since John-"
Sherlock drowned her out, with the constant replay of a single memory, red, red, red, and John, John, John.
Even sometimes her voice would be louder than the sound of gun shots and Sherlock would hear her say, "But you've handled it so well."
(To Sherlock there was nothing to handle well, John was alive in petri dish that Sherlock keep in an incubator, and Sherlock was going to clone him; and then it would just be like the old days.)
(This DNA that was kept alive in John cells and that was artificially settled on a petri dish, was not John and never would really be John that Sherlock wanted this was okay for now.)