What to do about bleeding nose and gums?

I just came here this fall. Since then, my nose has been bleeding occasionally without any injury. My friend told me it was because of the dry air of U.S. Is he right? How can I prevent this situation? I also have a problem when I brush my teeth. My gums are always bleeding and not just a little!! What should I do? Thanks.


Is using rubber bands an alternative to self-injury?

In the past I have self-mutilated and recently there has been a lot of added stress to my life. I've heard about wearing a rubber band on your wrist as an alternative. I was just curious are there any downsides to this method, as an example I have been doing this for a week now and I have gotten a bruise on my hand, it probably isn't from me snapping the rubber band but I was just wondering if there is anything I should know about this method? Thanks