AF 23 days late. Pink spotting for 1 day??

My period is 23 days late as of today. Me ans my husband last had sex on sunday. yesterday morning when I wiped it was pink. And then I wiped again and it was a dark red. But that's all. Nothing after that and nothing today. I have been having a twitching/pulsing feeling in my lower left abdomen the past few days. And I also took a pregnancy test and ovulation test this morning and they both were negative. I was having a lot of creamy/ milky discharge the past few weeks but this week I don't have alot of cm. I did check my cm earlier and it was a watery tan color cm. Anything similar happen to someone else or does anyone have any thoughts???