My Baby Is Exclusively Breastfed He Is 7.5 Months And

My baby is exclusively breastfed he is 7.5 months and had reflux. He's stools were fine but for the last 10days his stools have been watery green and smelly. He also has never eaten solids. He closes his mouth or blows raspberries at spoons and puts food to his mouth but puts it down or spits it out. The only times he's had either purée or solid he's spat out or gagged with both