I ve been taking Doxycycline Hyclate for two days. Today I ve had periods of dizziness, near fainting,nausea and extreme anxiety. They last a few minutes and go away, but they re pretty extreme. I m taking a fair amount of vicodin each day for bad hips, and am already taking small doses of Cymbalta and buspirone daily for anxiety, and I have no issues..... until I started the Coxycycline. What do you think ?????