Help! Am I pregnant or just my body going crazy!

Sunshine

Me and DH (dear husband) had sex 12/7 and 12/8. I got my period 12/23 and it lasted till 12/26. My cycle is normally 5 days very heavy but this one wasn’t overall as heavy but I still think it was AF. Me and DH (dear husband) had sex 12/26 and 12/28 and now today (12/31) I have pink spotting. I never bleed in between periods... also my cervix is high soft and cm is stretchy, I took a test and BFN .... HELP PLEASE. 6 months into ttc our second.