Faint positive

Truly Blessed • 👼🏼July 2017 👼🏼 June 2018 . Rainbow 🌈 baby born 2/17/20

Did anyone have any brown discharge/spotting after positive . I got my postive two days ago . I’m not sure how dpo I am because I’m irregular. I’m not sure if I had implantation that caused the brown spotting because I was having cramps . My hcg was at 16 yesterday .(Dr said might be early) . I’m not having cramps like before but still have brown discharge when I touch near cervix . I’m so worried I’m having a miscarriage.. any advice would help