I was prescribed 30mg of phentermine for weight loss. I tried taking the full 30mg but was too much, so I opened the capsules and separated into thirds. I've taken it 3 times and the dose is just right. BUT, I've noticed that I have spells of severe cramps and then diareaha, and maybe some blood in my stool, chilling,freezing(like the flu) and just feeling miserable. Does these syptoms have anything to do with "not crushing or opening capsules?"