swallowed

My dog has been acting a bit goofy. He has been liking the air, and gagged a couple times, and I found a couple pieces of plastic, that he may have coughed up. As of now he is acting normal, pooping normal/eating normal. But he is still liking the air. Can someone help??

Ok well this is my second question since I didn't get much info in my last question. I was reading on how to clean ur mouth with peroxide and water mixed together. And I'm not saying I did but I have a feeling I swallowed some. My throat is very dry. The bottle is brown and was 3% if I could see...

...thinking it would go down good? however the piece was tooo big to swallow and was hard to . i finally got it down but now my throat feels wierd,, would i be ok?