Hi, I Used Postpone Tablets Last Month To Delay My

Hi, I used postpone tablets last month to delay my period since I was on a trek.
I got my period 2 days after I stopped the postpone pill i.e 8th Jan'16

I have still not gotten my period this month as on date, ie 24th Feb.
Is this because of the postpone last month? Please advise. Whats the remedy?

Also, I had protected sex a couple last month while I was on the postpone pill