Ay normal lang yan, mama! When the black dried part falls off, the remaining yellowish color usually means the umbilical stump is drying up properly, you're doing the right thing with alcohol at every diaper change. I'd still check with your pedia just to be sure everything's healing okay, especially since baby is only 3 weeks old and it's better to have peace of mind, pero from what you're describing, marami sa amin ang nag-experience ng ganyan at okay naman lahat.
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