Doxycycline Hyclate Itchy Rash, Benedryl, Doxy, Augmentin, Severe Pain

I want to know if anyone has experienced severe joint pain while on Doxy. I was prescribed this med on a Monday. I (like an idiot) doubled up on my first dose Monday evening because I know you can do that with other antibiotics to jump start the process. What can I say? I don't like being sick. Well....Tuesday morning, I took my 2nd dose and went to work. Very soon after taking the second dose, I broke out into a very itchy rash all over my back that soon spread to other parts of my body. I called my doctor and was immediately taken off the Doxy and prescribed Augmentin. Later that night, I began aching all over. I woke up in severe pain throughout all of my joints, and was in a terrible mood.....obviously. As the day progressed, the pain continued, but seemed to be moving randomly about my joints. My ankles would hurt for a while, then my arms, the my shoulders, etc. That night, I took a Benadryl (still itching from the rash a little), some ibuprofen, and went to bed. I woke up feeling a lot better. A lot less pain in most of my joints. It was a good day. However, today, Friday, I am still in some pretty bad pain in my hands. Anyone else have a similar experience??????