Side effects on neocate

Yeah 4th week on neocate and she's reacted badly to it. Started off with a small bit of mucus in poo now her poos are nothing but mucus and thick jelly like discharge and she's in pain and it's coming out of her after every feed

It should last about 6 weeks as it's their bodies detoxing all built up dairy out. If after 6-7 weeks it's still happening you may need a different formula or to try other allergens