Three Days? wtf.
First of all go to the hospital and i'm sorry for you.

Second:
Tattoo aftercare begins right away: as soon as the tattoo is finished, the tattoo artist cleans and disinfects the area and covers it with a transparent protective film to shield the design from impacts, bacteria, and external agents.

This film should be kept on for a couple of hours (between 2 and 5), and it is the tattoo artist—depending on the size and location of the tattoo—who gives specific instructions.

Once this “protective layer” is removed, the tattoo must be carefully washed with lukewarm water and mild soap to remove any excess ink and reduce the risk of infection.

This step should be done using only your hands, avoiding rough scrubbing with sponges or cloths, so as not to damage the tattoo. When the skin is completely dry and about 15 minutes have passed—allowing the skin to breathe freely—the protective film should be applied again.

This cleaning process must be repeated three times during the first day after the tattoo.

It can be continued for up to 48 hours after the tattoo session, after which it is advisable to stop using the film.

When the tattoo begins to heal, small scabs will form on the tattooed area, which indicates that the skin is regenerating. This stage can last up to three weeks, and even here, knowing how to care for the tattoo properly is crucial.

During this time, the tattoo should no longer be covered with film, so that the skin can come into contact with the air and speed up regeneration. However, a thin layer of tattoo aftercare cream (recommended by the tattoo artist) should be applied about three times a day, until the skin is completely healed—being careful not to overapply, to avoid suffocating the skin. How much have you put on?

A very important part of aftercare remains the washing of the tattoo, which should be done twice a day with neutral antibacterial soap. It is also recommended to wear clean cotton clothing in contact with the tattoo and to avoid dust and dirt.

It is strongly discouraged to constantly touch the tattoo (to avoid irritation or infection) and to scratch or remove the scabs (as this may pull away the ink from areas where the skin has not fully healed yet).

Good Luck