10 dpo

I'm somewhere around 10dpo I believe. I've been spotting brown/pink for 3 days now. Not enough to even need a mini pad for. I have never had a period start like this before. Usually I have spotting for maybe an hour and then it starts. Also my nipples hurt, I've been having vivid dreams, and I have been more tired than normal. Could the spotting be implantation? And am I having early pregnancy symptoms?