Doxycycline Hyclate and normal blood

Thanks a lot to all of you people who share their experience with doxycycline. My dentist prescribed me doxycycline and 1 week later I started to feel bad just like some people described above I hade shortage of breath my legs and arms were shaking. I had anxiety and panic attack. The first time I experienced something like this I didn't know what was wrong with me. Normally I am healthy and very happy person. I am 27 years old go to the gim, I don't drink, I don't smoke. I have been in the hospital ER 4 times. They sad there is nothing wrong with me temperature is normal blood sample is normal AKG is normal. They gave me penicillin instead for the next 2 days I had even worse panic attacks. I stopped taking any antibiotics since then. The next day I felt much better. I had only some little panic attack. Today is my second day after taking antibiotic and I still feel some anxiety but not as bad as before. I would like to tell people who has similar side affects to avoid any sugar and bread in their diet this will significantly reduce anxiety and drink mint tea to relax It helps me a lot.