Shashank,
Will just add my voice to the others that the healing process following BAHA surgery is not a big deal. I had my abutment implanted at the same time as my translab surgery, so can't personally speak to the BAHA surgery as a separate procedure ... but I hope you've read enough posts on the forum by those who've had it done at some point after their AN surgery to become convinced that it really is not that bad.
I'll add that I believe Jo's (tenai98) experience, with the visiting home nurse coming to change the dressings, etc., etc., is not very typical. I think most of us have just healed on our own, with little if any medical intervention.
Don't be alarmed by the numbness you'll experience around the abutment area after the implant. I thought I would be living with the numbness forever, would always be hesitant about sleeping on that side of my head, and would be in a constant cringe everytime I went for a haircut/hair coloring procedure. I'm happy to report that the numbness went away gradually and completely (I'm almost two years post-surgery), and I can sleep on that side of my head and get my hair done without giving it a second thought!
Best wishes as you approach your implant date, and I hope you'll enjoy your BAHA!
Catherine (JerseyGirl 2)