need help & advice asap!!!

does anyone know of anybody who got pregnant without penetration form something like dry humping in underwear, fingering after touching penis... me and my bf messed around a lot about 12 days ago and my periods due in 2 days, all the tests are negative but i've been having some brown spotting so i'm scared that it's implantation. i'm on a combination bc pill and i take it every night just not at the same time (which my doc said is ok) am i pregnant or should i be ok?