It's really not going to be good to rip off your wound dressings. You're going to have to get the wounds dressed again if they're bad enough, or you'll be risking infection which could be quite a bit more painful, persistent, and difficult to treat than the original wound.
If you've already taken the maximum dose indicated on the packaging for the diazepam then you definitely shouldn't take more. The risk of fatal or damaging overdose isn't as high as with some substances but it's still very real:
http://en.wikipedia.org/wiki/Benzodi...rdose#Toxicity
Is there something else you can do to avoid doing the above?