Hi i have a question and i canot seem to find it ennywhere online

I stoped my bc after 14 days in it. My last pills was on a thursday started aving cramping on the saturday witch i taught was normal starded what i taught my periode on tuesday.

My mentrual flow for 5 day was almost none brown and only when i went to the bathroom. My menstrual flow is normally verry heavy since then i Have pelvic pain cramping headache lower back pain and my nipples hurt verry bad from times to times. Test says neg should i wait and do another one and when or should i run to the doctor lol thanks for enny suggestion and commentaire