dog ate raisin bran? gave hydrogen peroxide did not throw up? what do I do? can't...

...take to vet!? I had a 1/4 or 1/2 box of raisin bran that my dog got into. I gave him 2 Tablespoons of hydrogen peroxide, "he's about 65-70lbs, but he hasn't thrown up. What do I do! Please don't say take to vet because I can't