I am currently on Divaproex, concerta, and Inderal. the last several weeks I have been drinking quite heavily and been dehydrated to the point of leg cramps. I have also been taking antihistamines throughout this month also because of my severe allergies. I had my period last month but did have unprotected sex before that period started I am now several days late for this period and have taken Plan B... Should I be concerned about being preganent? And stop taking Divaproex now?