Hi I have been placed on clarithromycin ,lansoprazole and tinidazole tablet from the first day of my period last month feb 12th, the medication lasted for 10days..and I have not had sex since the day I started my medication and also have not had unprotected sex for like two months before my last period.today is 17th of feb still my period has not come...I have signs of my period like my breast increased as usual but still my period has not started.also on 5th of feb I had some white discharge from my vagina which lasted for like 4days followed with a little itching on vagina but stopped after the 4days.its17th of feb and I have not seen my period.what could be the problem please?