2dpo cramping and bleeding

Sorry a bit tmi - I am currently 2dpo (confirmed with lh strips and bbt which is rising) I have had some cramping and spotting from the day of my peak which has continued. Today my bleeding is a bit heavier (brown/dark red) with bits I assume mixed with cm.

The cramping is getting quite painful and feels like af is about to show. It’s in my lower abdomen, thighs and lower back.

I was planing on starting progesterone suppositories at 3dpo because I do have low progesterone levels but now unsure what to do.

Can this mean AF is about to start or can it be normal?

Do I still have a shot at ttc this cycle?