post extraction dressing

Hello

I had a tooth removed today - it had broken in 2 pieces and couldn't be saved, plus was veyr loose.  I went to a private dentist,  Other extractions have been under NHS dentist.

Procedure very smooth and pain free.  At end he put a dressing on - I wasn't aware of it because of the LA, but he said it was iodine and cloves, and to bite on the gauze below it until I got home, no mouthwashes today etc.  

Good afternoon, no pain or discomfort, but as the anaesthetic and swelling went down I felt the dressing slide and eventually slide out.  No bleeding from the socket. 

Should I be worried or do anything?  He said that when I started to mouthwash 24hrs later with salt water, if I was doing it correctly I would get bits of the dressing come out.  I have never had one at all before with any extraction.  

Any advice please?  Or am I just worrying because I have never had one before,

thank you x