Driving myself crazy!!(tmi no pics but beware)

I am 13dpo or so I think. 10dpo I thought I seen very light brown when I wiped. Confirmed it. Next day had a slightly darker brown on a liner but it was just those times.nothing to write home about.  I've had some light cramps & a little nausea. I've had heartburn but that's not even a symptom for me because I always have that lol. I wish I had never seen the brown "stains" because I am driving myself crazy wondering if it was implantation or a fluke. I seen a photo earlier of someone posting their liner and it resembled what mine looked like. I however can't find the thread.... Keeping my fingers crossed for a BFP this time & trying to keep my mind off of all this!