i’ve been on bc for 3 years. the previous month i skipped my period by skipping he sugar pills. this month i took my sugar pills but had sex on the last day of sugar pills and started new bc pack next day. after having sex i had a lot of cervical musics and i am concerned about that because it’s never happened before. i did not miss any pills and started my pack on time just conxered about cm and having sex on last day of sugar pills and still did not get my period this month. should i be concerned about getting pregnant