Eh, the general advice I've come across is to keep the area dry for at least 3 to 5 days, the range varies because some clinics are more conservative than others, so honestly the safest bet is to follow whatever your own doctor told you at discharge, since they know how your wound was closed. For bathing, most people manage fine by covering the dressing with cling wrap or a waterproof sleeve to keep water off, then just showering carefully around that arm until the site is properly healed. For the scab stuck to the gauze, the trick I've heard works really well is to dampen the dressing first before peeling, wet it gently with clean water so it softens and lifts without pulling the scab off with it, which reduces the chance of reopening the wound. It's also worth watching for any redness, swelling, or warmth spreading beyond the insertion site, since infection is rare but possible if moisture gets in too early or the aftercare isn't followed closely. That said, do check with your own doctor or clinic directly, especially if you're unsure, they'll give you the most accurate guidance based on exactly how your insertion was done.