If you were loosing compression then it would take longer to start as the pressure in the cylinder builds up, but it should start every time unless your engine is well fooked. :shock:
You said there was no spark tho and without a spark it won't start, so surely that's your problem. You now need to find out why there's no spark.
Did you over rev it when you went from 4th to 3rd?? Might be worth taking the rocker cover off to check the rocker arms are in one piece.