Please Help! My cat is shaking and acting different!! What could it be?

Asked: Please Help! My cat is shaking and acting different!! What could it be?

About my cat….
She is 3 years old. Last night I bombed my house because her and my dog have fleas. I left for two hours, they both were in a outdoor cage under a tent. Came back and everything was fine. I cleaned the house before letting then come back in. I put some flea medicine on my dog and cat along with a flea collar. I left them outside for the night. And when i woke up this morning I let them inside. My dog is perfectly fine but my cat was walking very low to the grown and a little shaky and I believed it was because she licked the flea medicine I put on her. So I called the animal hospital and they told me to call the company of the flea medicine and I did and they contacted me to someone and they told me She should be fine she's prob just sensitive to the medicine on her skin and she's aggravated. And they will contact me tomorrow to see how she's doing. Also to wash her and get the medicine off. I did so and she is still shaky. This cat means the world to me and I hate seeing her like this. Is there anything I can do? I've feed her and gave her cold water and she has ate and drank. She hasn't thrown up. She's just cleaning herself because I washed her. She's not acting totally herself and it really scares me. I don't want her to die! Please help me!