Uy, alam ko ang pag-alala mo! But honest to goodness, kung may doubts ka kung implantation o period talaga yan, or kung basta irregular na ang cycle mo and you're worried, please go see your doctor or take a pregnancy test para sure na. Hindi siya mahabang process, and honestly ang peace of mind mo mas importante.
Irregular periods talaga common sa maraming babae, pero ang pattern mo ngayon sounds different, kaya better safe than sorry, sis. A few of us moms din nag-experience ng weird cycles, pero na-figure out lang namin kung ano talaga when we got checked. You'll feel better once you know!