3 ear stretchers in one ear?

i have 3 ear lobe piercings, one has been stretched to 10mm and i'm going onto 12mm hopefully tomorrow and then stopping, i have just put a stretcher in the 2nd hole with is a 1.6mm or 2mm, which i'm going to go up to 6mm to 8mm, and then would it be possible to stretch my 3rd hole to four? don't put anything stupid like why would you even stretch your ear or anything like that;) xxx