doctor??

ashton • trying to have some baby dust magic

so I've posted before about me having a "period" for one day and then like spotting for 2 days well ever since I've had lower back aches that won't go away! mind you my periods usually last about 4 days!I've took 2 test both came back negative! should I go to the doctor or just take some midol or something lately I've been taking ipheprophen?? any advice would help!