Unknown and no.
The "big bang" is a misnomer as it is really the "big expansion." Prior to the "big bang" our entire universe existed in a singularity, no space-time, no dimensions, no forces of nature.
For an unknown, and unknowable, reason that singular suddenly went through an expansion where it went from the singular to 1/2, approximately, the size of today's universe.
It is believed that anti-matter did exist during that initial
Most importantly space-time was created which in turn gave the four prime forces creation, strong force, weak force, gravity and electro-magnetism.