All BFN, & spotting brown/pink 😔👎

Em
Update on my last post: 
According to Glow I ov'd last week. But was OPKing & all came back negative! I have very irregular cycles and I bleed for 6 days. Usually comes heavy.
 I've spotted for about 3 days with a little watery mucous then turned brown with light cramping. No foul smell. It stopped today and I took a pregnant test right now kind of late (9:00 pm) & it also came back negative. I'm not sure what's going on with my body or if I'm even ovulating? 😭