So it turned out, the knife did not go there and left a nick on your finger. Directly on the fingers there are no vital vessels, so do not overtighten them. To reduce the loss of blood, raise your arm up.
It is not necessary for the relief of pain and for the purpose of washing the wound to substitute the finger, which is cut, under cold water. Do not do this, as this only makes it difficult to stop bleeding or worse, it will help to infect your finger. Such injuries should not be underestimated, since American President James Garfield, died of a conventional finger cut, as a result of blood poisoning.
And then, we are civilized people, we have a first aid kit in the house. It is kept in order and is filled with various herbal preparations and means of protection. Plaster, antiseptics, bandages - it's all there is. Back to the cut finger. The first task is to protect the wound from infection. Here you will need the achievements of modern pharmacology.
I disinfect the skin around the cut with iodine, do not touch the wound itself, it will make healing difficult and kill living cells. To wash the wound, hydrogen peroxide is suitable. You can not apply to the open wound ichthyol ointment, Vishnevsky ointment and other our favorite smelling ointments.
What do you need now? Do not use a tight, sterile bandage. There is one trick here. If you bandage your finger, then, no matter how hard we are, due to the general mobility, he will be sad, "worried" and still bleed under the bandage. If the cut is very deep, then the scar can later be sloppy. In addition, when it will be necessary to bandage the wound, it is not so easy to remove this adherent bandage, besides it is painful.
To prevent this from happening, we apply a small trick. After disinfecting the surface, put a paper splint on the entire damaged phalanx of the finger, for this purpose tightly wrap the paper strip around the wound and with a bactericidal plaster or bandage make a tight bandage. Paper lubok can fix the edges of the cut, which will not allow them to disperse when moving. As a result, the wound will quickly tighten, and the scar will be almost invisible. When it will be necessary to bandage the wound, it will be very simple to separate the bandage from the paper. The adhering paper itself can be removed if moistened with a solution of furacilin or moistened in hydrogen peroxide.
Of course, you understand that not every paper is suitable for these purposes. For example, newsprint in printed ink contains many harmful compounds. The most suitable white paper for printer, disinfected in peroxide.
Good luck to you.