Help, my dog ate a cotton ball. IWhat should I do?!?

So the other day I had some friends over one night and we were cooking smores on the back deck. Our dogs were outside and playing in the yard. They really like to go down the slide from the small playground we have. Anyways, we were all cooking outside and I dropped a bag of marshmellows. I managed to get most of them but one our dogs managed to scoop one up and ran off. (Big marshmellows, not those mini ones) I figured one wouldn't hurt to much, as I made sure to tie the bag up and put it away. I'm just glad it wasn't chocolate. Well, I guess he really enjoyed it, because one day I was getting ready for work and he was watching me. I guess im rather clumbsy and knocked over a small jug that we keep in the bathroom that contains cotton . Well this time he ended up scooping a couple up and ran for the hills. This time I gave chase but by the time I got to him he already devoured them. I got kind of worried that my dog at a cotton ball so I called my mom and my mom got scared "She said 'You're movin' with your auntie and uncle in bel Air'" I whistled for a cab and when it came near the license plate said fresh and it had dice in the mirror If anything I can say this cab is rare But I thought 'Now forget it' - 'Yo homes to Bel Air' I pulled up to the house about 7 or 8 And I yelled to the cabbie 'Yo homes smell ya later' I looked at my kingdomI was finally thereTo sit on my throne as the Prince of Bel Air.