wasted milk? your body will produce more.. so dont't worry about it. i've got the same problem too.. its called oversupply.
i've gone thru 2 boxes of 60 pcs of disposable breastpads and my baby is only 7 wks old! i'm going to consider reusable breastpads as they will be much more economical in the long run..
the other option is.. reduce your supply. after latching on.. do not pump out the remaining breast milk. during pumping session, do not pump totally empty. the oversupply issue will be slightly more manageable then.