21 year old female with chest pains?

I think it is anxiety related. What happens is you get a small pain, worry about it -then it gets worse. Fear and anxiety cause very negative symptoms. Have you tried going for walks ? Exercize is one of the best stress reducers. I wouldnt take any medication for anxiety, thats witch-doctor stuff. Take an ibupropen as a muscle relaxer or valerian for sleep. Go for walks, be glad no test shows anything bad. Also , spirituality is paramount. I am a Christian and would probably be worrysome without it.