What Should I Do About Numb And Swollen Fingers Five Days After Injecting Methamphetamine Into My Right Hand?

I did a shot of methamphetamine about 5 days ago into right hand. I didn t notice anything different until the end of it. Now 2 of my fingers are completely numb and swollen . Will this numbness go away or have I permanently damaged it for good? What should I do at this point because I m scared. I m definitely quitting because I can t handle this anymore, obviously.