Oh you poor thing, day 5 with severe engorgement sounds absolutely exhausting, and your mental health matters just as much, so please don't feel guilty about this decision. From what I've heard, cabergoline (Dostinex) does work for most mums to suppress milk, usually within a week, though some feel relief as early as 2-3 days, but the first few days can still be quite uncomfortable as the milk doesn't stop instantly. Someone in my mum group mentioned that wearing a tight bra and doing minimal hand expression just for comfort (not to fully empty) helped them get through that painful early window while the medication kicked in. That said, a few mums did raise that it's not officially approved specifically for this use, so the dosage and monitoring really does vary, which is why it's worth having a thorough conversation with your own doctor or a lactation-informed specialist at KKH to make sure you're on the right protocol for your situation.