Yaaaaay for getting the BAHA. As for processor wait-time, when Cochlear applied to the FDA for approval to market the product a number of years ago, the FDA made physicians/audiologists tell patients they must wait 90 days for the abutment to osseointegrate into the bone before attaching the processor.
As Clarice mentions, this was years ago. Within the past 2 years Cochlear changed their "equipment" - now it's made from materials used for dental implants - and they changed their recommended waiting time. I don't recall exactly what the new time is, but I know it's less than 90 days.
That said, most docs who do the BAHA implant still like to be conservative and go with the 90 days. I know mine still makes patients wait that long.
As for the plastic cup, docs have different protocols, but my doc allowed me to shampoo 24 hours post implant by holding a cup over my site. The key is to not let the site get wet.
The BAHA is incredible; have had mine a little over 5 years now and absolutely LOVE it!!
Char, as James suggested, you may want to look into reprogramming. Might make all the difference in the world.