For the first time since I brought Ralfie home, I'm spending the night without him

I feel like the worst Mommy in the world. I'm prescribed adderall for my ADD. When we brought Ralfie home, we were VERY careful to vaccuum the whole house and puppy-proof his area. I ALWAYS keep my medication in a room he isn't allowed in, in the medicine cabinet. WELL... I threw on a sweatshirt tonight that had been laying around for god knows how long in my closet. One of my adderall pills was in the pocket, and it must have fallen out when I was putting it on. I didn't even notice it

My boyfriend came into the room a few minutes later and noticed it laying on the floor, and it was wet and smaller than it should have been. Didn't take a genius to figure out Ralfie had found it and licked it.
Soon after, we noticed Ralfie was shaking and running around, acting WAY more hyper than normal. He didn't know what to do with himself. He was scared and couldn't settle down. We called the animal poison control #, and they told us to rush him to the animal hospital (after they got our credit card number of course, that was first priority

) The animal hospital was really nice, they took all his vitals and gave him Cipro, and wanted him to stay overnight to be monitored. They said he didn't get very much of it, but wanted to make absolutely sure. I'm glad he's there and that hes in the best possible place, but I feel so much guilt. I should have paid better attention to him. He's my baby and I feel so irresponsible.
So please please pray for my little man. He's still only 4 1/2 months old and even though I think he will pull through this, he's all by himself and I'm sure he doesn't understand whats going on. I miss him so much, I see his toys and he sleeps with me every night, I feel so empty without him here. Thanks so much for letting me vent, I know you guys can relate to how hard it is to be without our babies.