Hi.. I And My Partner Had Sex On 29th Feb.

Hi.. I and my partner had sex on 29th Feb. I'm pretty sure I did not ejaculate inside her.. She took an unwanted 72 pill after 1-1:30 hrs. She had her last periods on 22nd Feb..and then after taking the pill she again bleeded for 3 days from 6th March. Was that her periods? Also after this, she hasn't got her periods till today i.e 5th April. Is she pregnant??