Do I need professional medical help with this razor cut?

[Hayley]

Yes this is self harm, and save your lecturing because I'm not going to pay attention to it.
This cut is on my tricep and this all happened about 3 days ago, and it was the deepest razor cut I've ever done, so I'm a little freaked out in case it gets infected or anything. I've only now began to start washing it with warm water and letting it dry and then putting on antiseptic cream and putting a large band-aid on afterwards. (These are the only things I have in my house that can help).
The following are links to the photos of the cuts:

http://instagram.com/p/jve3RlxF3Z/
http://instagram.com/p/jve8y6xF3c/
http://instagram.com/p/jve_RiRF3e/

(They are different perspectives of the cut, just so you can get an idea of how deep it is).

Thanks.

[Camille]

I'd get medical help if I were you. Unfortunately I was in a very similar situation the only difference was where my cut was. Any who, it might need stitches because of how deep it is. I didn't get stitches because I didn't know it was that bad until it finally healed, it's a really bad scar now. It's darker than the rest of my skin, almost like a permanent and smooth scab.

[namcy]

I would be surprised if they stitched it, but you never know.