i took my first dox tablet, 50mg. It is to treat adult acne. i am taking it because i am trying to get pregnant and this pill apparantly does not prevent that. I don't want to get a yeast infection from it because it is an antibiotics. The doctor told me that i wouldn't because it is a low dose. I am still scared. Reading all of these negative side effects that people have experienced makes me very concerned. How do we find out how safe something really is?