Help!!!!!!!!! :( Ugly deep weeping crater

I have just found this forum not realizing that my chronic acne scarring has been caused by a LOT of skin picking over the years. Six days ago I was hormonal and decided to pick at an old deep seated pimple that I have had for years near my chin that I SWORE I would never pick at again. Anyway I put some lactic acid on a cotton bud and burnt myself a huge wound as it seeped under the skin. Now I have a massive weeping crater which shows no signs of healing (have tried rosehip oil, calamine lotion, cortisone cream, aloe vera - nothing is helping and I am soooo depressed. I work as a hairdresser and have to be in close personal contact with people all day and I tried leaving it for a few days without makeup but after seeing myself in the mirror over and over I was crying and getting more down as it was all white. I see people looking at it but saying nothing. This is after six days! So today I covered it up with masses of makeup and it turned into a big cakey ugly mess. I now just have the oil on it again as I write this. I picked it twice one day after it scabbed and it just will not heal now. The worse part is over all my other pock marks it just looks so much uglier. And to top it off - The bastard of a pimple is STILL there in the middle of the crater - as ugly and deep seated as it was before. Can anyone help me here with a suggestion as to what to try? I guess it maybe just a time thing? So depressing.