Long post but I'm driving myself batshit crazy

We have been TTC for 7 years.

My AF has been late 2x in my life, first time was when I was pregnant with my twin girls.

Second time it was 8 days late in 2014.

So I had AF Feb 21-26, March AF was supposed to be the 20th (I have a 27-28 day cycle)

On the 6th & 7th I had red blood.

Then nothing, BD on the 10th.

The 15th - 20th I had brown sticky discharge. (Pic )

AF is no 14 days late.

I have taken hpts and they are below.

Yesterday & today I have sore breast, on the sides.

I had blood test done on the 22nd which was negative.

Does anyone have advice or opinions?