Ay marami pong possible reasons why baby's refusing the breast, sis! Could be teething na (mas maaga pa man, pero possible), tongue tie, or baka uncomfortable lang siya sa position mo that day, a few of us moms encountered this around that age too. Best talaga na i-check with your pediatrician para sure kung may physical issue or kung developmental lang ito, kasi they can observe baby while feeding at makakabigay ng proper guidance, hindi lang kami sa bahay. In the meantime, stay calm kasi parang nararamdaman ng babies ang stress natin, so it might make feeding harder pa. Hugs, mama, this phase is tough but usually manageable once you know what's going on!