Urinary Tract Infection
"This is the 4th time taking this in two years and it does make me sick (it&#039;s for acne and UTI). Upset stomach etc.. But I can&rsquo;t really take the other antibiotics they give me hives and fast heart rates. The most disturbing thing I&rsquo;ve noticed the last 2 times using doxycycline I&rsquo;ve had breakthrough vaginal bleeding and NO I&rsquo;m not on birth control and have very regular periods when I&rsquo;m not taking doxycycline.. It normally takes a while for my period to go back to normal after I take them. Anyone else had this issue?"