Flueky- fingers crossed for you that she stays away! I'm back in the TWW with you all...we are apparently anti protection lol. I have very similar to you...we DTD at 12dpo, started spotting. Picked up to a light-moderate spotting, mostly brown with some pink on 13dpo...never enough to fill a tampon or pad. Then on 14dpo, had one tampon that was covered, but not full if that makes sense, with red. Figured it was AF (also had bad cramping all wknd that needed motrin to control). And then it just disappeared! No spotting, no cramping, nothing! I'm 18dpo today and going to test either tomorrow or Saturday if she hasn't shown. Will call doctor on Monday if its negative.
Edited to add that I have zero pregnancy symptoms as well...so I'm thinking weird cycle??