Hi, I had a single right mastectomy with full node clearance. I was surprised at how little pain there was. Yes, reaching up was tricky for a while, but I was able to reach up with my left arm as needed. I did the exercises frequently and reaching up improved fairly quickly. I was able to do most things for myself and kids. Lifting anything heavy might be a problem for a bit. I was able to drive after a few days but disliked the feeling of the seatbelt across the wound, so only did quick local drives. You'll be surprised at how you can make do and work around challenges. Of course, we're all different though. All the best for your surgery and recovery.