Subject: total energy of universe now vs 10^-6 seconds after the big bang?

the volume and temperature of the universe are theoretically known
let's say 10^-6 seconds after the big bang. The conservation of energy 
says that the energy then must equal the total energy in the universe
today. how can this be? we know that there are untold billions of
galaxies many with hundreds of billions of stars in them. Einstein's
E[equ]mc^2 can estimate the energy from the mass of these stars, not to
mention the residual heat of the universe. how could this incredible
amount of energy of the universe today, ever equal the energy in
something the size of a basketball no matter how hot?

Re: total energy of universe now vs 10^-6 seconds after the big bang?