That part is up to you. I wish you well.
You may wish to visit the anxiety forum, however some interim tips are:
Keep your self-distracted
Do not go searching through the Internet for symptoms
Remember your own brain creates anxiety so in the end you control it and can overcome it!
I have not any symptoms, but i am very anxious that it will change positve at one day. So I live with great horror everyday. I can not control myself.......
Then seek professional mental help to deal with not accepting your negative test results.