Mama, I'd really suggest you message your OB now or call her clinic, hindi kailangan maghintay ng 19 days pa, lalo na may discharge na involved. Better safe than sorry talaga with anything sa breast, especially habang breastfeeding pa. A few of my mum friends had similar concerns, and their doctors were super quick to check it out kahit onti lang, it's really their thing to assess in person kaya don't worry, tawagan lang. Sending you strength, mamsh!