What does this mean???

I’ve had the same brown spotting in the pic below since Monday (6 days). This has never happened to me. 13dpo, still BFNs. Sore nipples (trying to avoid wearing a bra). Crying at random times. Also, I’ve NEVER experienced any of this before or during my period. The only things I experience PMS wise is mild cramping on day 1 of AF and light spotting a day or two before AF. AF is due tomorrow, and I’m going crazy. So many people keep saying it’s just PMS. Ladies, it’s not normal for me at all. This is all highly unusual for me. What does this mean? I’m going crazy because I know something is off. I’m trying not to get my hopes up.