Hope Sweep is feeling better today. Please don't doubt yourself, although its natural. When Jess was on chemo for her lymphoma she had the first treatment and was fine, then the second and she got unbelievably sick...wouldn't eat, couldn't stop vomiting, just lay there and my parents were convinced they'd made the wrong decision. It was an isolated incident though and she never had another bad reaction. Its a difficult thing to go through though. Hugs to you and little Sweep from Coop and I.