I'm Confused.... Advice Needed

Okay so I have irregular cycles got on BC when I was 19, I started with the pill then switch to depo. Its been about a year or two off depo and now I was told I have pcos.... I recently had took a test and it had the faint line and a dark one then waited about two weeks to take another one it was BFN so idk what is really going on.... I'm boobs/nipples have been really sore and have been spotting.... What should I do?????