Ay, mahirap yan tama-timing talaga, mama! Kung ginamit mo yung DMP bago matapas ang validity, possible pa rin na mabuntis ka because protection isn't 100%, it depends kung paano ka nag-insert at kung consistent ka sa pag-follow ng instructions, kaya best talaga mag-take ng pregnancy test after your missed period or visit your OB para sa proper check-up para sure na. Hindi lang DMP ang isisingil, baka stress at anxiety mo pa pero huwag mag-alala, I've heard ng maraming moms na successful ang DMP so it could also be fine, pero only your doctor can tell for sure!