Serious Side Effects After on Welchol for 1 Week

I ended up in the emergency room after having multiple side effects from taking Welchol for about 5 days. I was unable to eat or drink, felt extremely full, belching, anxiety, sleeplessness, unable to breath, and heart racing. It has been 5 days now since I was discharged but I am still experiencing severe anxiety, and stil no appetite, and having to deal with having difficulty breathing is extemely uncomfortable. My anxiety was so bad that I was pacing the floor thru the night and could not lay down to rest. Just a warning to others, please be careful when you start this medication. My pharmicist said that the side effects could last weeks and even my doctor's nurse said the same thing.