Black holes could have formed immediately after the Big Bang, but not in the way we typically think of them today. The concept of black holes as regions of spacetime with immense gravitational pull and an event horizon was developed later in the history of the universe.

In the very early moments of the Big Bang, the entire observable universe was incredibly dense and hot, a state known as the Planck epoch. During this phase, the universe was governed by quantum gravity, and the laws of physics were very different from what we observe today.

In such extreme conditions, intense density fluctuations and rapid expansion could have given rise to primordial black holes. These hypothetical black holes would have been very tiny, possibly as small as 10^-23 grams, and would have formed due to quantum fluctuations of matter and energy.

As the universe expanded and cooled, these primordial black holes would have been stretched and diluted. However, some may have survived and could still exist today, although they would be incredibly hard to detect due to their small size and faint gravitational effects.

It is worth noting that the formation of primordial black holes is just one speculative scenario, and their existence is not yet experimentally confirmed. Further research and observations are necessary to shed light on the mysteries surrounding the early universe and the possible existence of primordial black holes.