Girls, who had allergic skin rash? We were given treatment with Fenist…

Girls, who had allergic skin rash? We were given treatment with Fenistil drops today. I didn't look at the instructions and gave the child 6 drops straight from the spoon, turns out it was supposed to be diluted with water. Do you think anything will happen? Has anyone experienced this? Now the child is nauseous and the breast doesn't take. I am very worried.