Cloud 9 bath salt contains a mind-altering substance (read "drug") as I am sure you already know. What you are experiencing now are the side-effects of taking this drug.
Hopefully, these side-effects should be temporary and self-limiting. However, if you are still experiencing them even now i.e. 3 days after consuming Cloud9, then I strongly recommend that you visit an Emergency/Casualty of a hospital for treatment. You may require to be given some tranquilizers for relief.
As a general rule, all such mind-altering drugs are potentially dangerous and carry the risk of short term and long term toxicities. Remember that the medicines prescribed by a doctor have been studied rigorously for years before being approved for use, but the same does not apply for the kind of drugs used in Cloud 9. For the sake of a brief 'high', you are exposing yourself to serious risks.
I sincerely hope you are feeling better now; if not, then don't hesitate to obtain medical help
Dr. Saifuddin Kharawala