I'm not sure what you mean. A black hole (regardless of it's mass, can be very high) is a type of singularity. Do not confuse the event horizon around a black hole with the actual singularity. It's a singularity in the same way a pelican is a bird.
We aren't currently exactly sure where 'everything' came from, though. We do now that the further back in time you go, the smaller the universe gets. Without any known reason to assume a lower limit, this results in a singularity at the 'start' of the universe.
We also know through experiments that matter and antimatter can 'come from nothing'. And it happens often, and more or less all over the place. Of course, usually not enough to fill up a whole universe.
There are also speculations and ideas of things such as branes which try to explain how the universe started. If you have some sort of science channel available (TV channel, that is) chances are big they'll have programs about that regularily. They try to explain just what you are asking; how did the universe start, what made it fill up with matter/antimatter/energy, and so on.
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