i was prescribed doxycycline for 7 days and it has really screwed...

i was prescribed doxycycline for 7 days and it has really screwed my body up, i have experienced all the symptoms mentioned including a general strong feeling of unease and feeling like i have the flu as well as horrible reflux and stomach problems and its been 5 days since i stopped taking it and i am still experiencing these symptoms they seem to be just a little less severe. Can anyone give me any clue as to when i will recover from this or any steps i could take to help my body recover. thanks