I m taking treatment for conceiving, My doctor suggested Duphaston to use for 15 days. My last period was on 30th March 2014, I generally get my Menstrual cycle 26-28 days. I missed my period, i thought i m pregnant. I have done HCG test at home and the result was negative. Now should i be using any medicine to get my periods and will it hurt my health, pls let me know my next step as i m in a confusion state.