It must have fallen out of next door's rubbish. Thought it was a leaf at first but could smell it was camomile. Pup dropped a tiny bit which confirms it was a used teabag but she managed to swallow the rest before I could get it off her.
Had a quick google but couldn't get conclusive advice, what do all you experienced dog owners think? She is a 6 month old cocker spaniel.
I would phone the vet to ease you mind but wouldn't worry too much.
My Spaniels (one is a 6 month working cocker) ate half a pound of butter last week (long story) and I was braced for the repercussions, but there were none. At all. Must be all the other crap (literally) that they eat.