Well....there might be both
We"know" (most researcher angre upon it) that we had the big bang.
But something seldom occur from itself, and I for one define the the "force" that started it all for,... God.
As humans we are always in search for the "truth".
My advice for you is to listen, evaluate, and trust that what you find most natural, and that you feel inside is Your truth.
None can prove any of these theories, and we have a lot of different beliefs that all say they carry the truth, that is why you shall listen to your heart
