Are my chances of conceiving with treated hashimoto's exactly the same as someone without this disease?

No: The thyroid is important for fertility because it plays a role in hormone balance, menstrual cycles, libido and basal body temperature (BBT). These hormones are responsible for healthy metabolism, growth, development and repair of the each and every cell of the body, most importantly the central nervous system of the fetus.

Yes: If your thyroid function test is normal (with replacement ) , your chance of getting pregnant should not be affected.