Hello, My Last Period Was On The 6th Of Feb

hello, my last period was on the 6th of Feb 2016, my cycle is 30 days, i have to travel on the 7th of march so i decide to induce my next period by taking Primolut N after doctor advise to take 3 tablets a day for three days and stop. and last tablet i took was last Tuesday, still did not get my period, please advise