(Tmi) is pink spotting normal for 4 wks?

I just found out i’m pregnant, I’m almost 4 weeks. I noticed some light pink spotting this morning. There was slightly more than this the first time. I’m also having hot flashes. I’m sorry if this is tmi or weird to ask, I’m just a little worried and i have nobody else to ask because nobody knows I’m pregnant yet. I once heard that pink or brown spotting is okay as long as it isn’t bright right and heavy. Is that true? Seems too late to be implantation, I’m 14 dpo, but I guess it could be that (if that doesn’t show up until days after implantation)