When you start, this will often happen but it will stop as you continue to floss regularly. Healthy mouth, healthy body.. stick with it!
No and you shouldn’t see any. If you see blood while flossing, it’s a pretty good indicator of gum disease or other oral health problems. It could also be your flossing ‘too hard’ but that is pretty hard to do. You should visit a dentist if the bleeding continues for more than a couple days of regular flossing.
Yes, if I haven't been flossing. It's a build up that will gradually go away- give it two weeks.
If it doesn't after that, talk to your dentist.