Brown spotting for 5-6 days already!!

Marry • Hi my name is Marry I`m 23 yrs old, and hubby is 27. We`ve been together for almost 6 1/2 yrs since I moved in with him. 3 yrs in may Married.& over 5 years of trying for a baby! Praying for baby😊👶
Hello ladies today I'm on cycle day 23 that would make me 6-7 dpo not sure but for the past 5-6 days I've been spotting just brown like old blood. Sorry tmi but my first day I started like that it was like almost black in color! I dnt know what's going on. I still have like 7 days for period and this had never happened to me before. Can anyone let me know if you experience this? Just to let you know I've been alil nauseas and now I started with sore throat? Thanks 😊