I gave birth last dec 28 2012 via CS.. When I returned to my ob last feb 13, 2013, she prescribed ALTHEA pills.. I followed her instruction when to use it.. ( I took the 1st tablet on feb 22, 2013 because I noticed my menstruation is back, with red bloods on my underwear).. Then the day after, feb 23, I had high fever , cramps , ang chilling.. I don t know what this is about...please help