period talk

im sort of trippin out because im 14 days late on my period. I haven’t had irregular periods since i stopped taking birth control a few months ago and i had to take the plan B pill in September. i started my period finally end of September and went into beginning of October.... Well I never started my period at end of October and im still waiting. we had the unprotected sex when the period was already late so idk if it’s stress, plan b or what. I’ve taken multiple tests and all are negative but idk where my period is 😭 I’m planning on getting back on birth control but I’m just scared.