Wa'alaikumassalam! Eh sayang, this is really something you MUST discuss with your doctor or lactation consultant first, especially since it involves medicine and breastfeeding, okay? They need to know your full situation to advise properly. Jangan ambil risk, bawak tanya doctor yang handle you directly, either your OB/GYN or the pediatrician. A few of us mums have had similar concerns, and the doctors always give the clearest answer once they review the specific medication and your baby's age. Better to be sure than worry, kan?