Anyone supposed to have their period on 2/19 and late?

So im looking for a cycle buddy whos period comes around the same time and hasnt had any sign of their period. Im late and still no sign of aunt flo. With some backpain,little bit of breast tenderness,and only random nausea. My last pregnancy was alot different i was always throwing up and knew way before i knew my period was late. Also pregnant with twins so it was worse. All ive had is negative pregnancy test.