background info: i gave birth to my daughter late august. i was bleeding all throughout september and i was gonna start birthcontrol when my ob gave me the ok to start having sex...

i started taking birthcontrol in October and i was so bad about remembering to take my pills everyday and sometimes i would take the wrong pill on the wrong day.. through out all October i had unprotected sex with my husband. my period was oct 22- oct 29. november came around i took birthcontrol for the first 4 days and then forgot to take it so i stopped completely and i was gonna start fresh when my period came around. again still had unprotected sex. on nov 12th i had spotting/light bleeding and it only lasted for a day and it never filled up a pad completely. and ever since then i have not bled and i’ve taken pregnancy test’s and they all said negative.. so idk what to do and i called my obgyn and his nurse said that my “one day bleeding” was my period but it never got heavier. and they won’t do a blood test since my pregnancy test are negative. i have no clue what to do. help?