On an off spotting and fading pregnancy symptoms

I'm frustrated and scared. I'm 6 weeks 6 days, the day b4 yesterday I had minor cramping n light pink blood when I wiped after peeing, the cramps stopped but the blood spots continued till yesterday around 17:00. My only symptom of pregnancy (sore nipples disappeared with spotting) n reappeared again yesterday midday) This morning it started off as light brown watery spotting, n soon mucus accompanied by light pink spotting again. What the hell is going on? Is this how miscarriage begin?