What do yall think!??

I am now 13 days late last night my partner and i had kinda rougher sorry tmi sex then this morning i wake up and im spotting pinkish brown? Very light only when i wipe we have been ttc all month i took a test the other day and got  faint positive then took another the next day (yesterday) and got a bfn !? Im so lost fyi:they were the same test brand first response thanks yall:)