ODD SPOTTING

5 days ago, I wiped and pink CM. Then nothing for that day and the next. Then the 3rd day, wipe pink CM and then nothing. Fast forward to today. It’s what looks like my period along with extreme nausea and an abdominal burning sensation which is what I had when I was pregnant with my second. (I have 3). I have NEVER experienced a period like this. Not have I had these symptoms with a period. I should state that I had implantation bleeding with my third that pretty much exactly resembled the bleeding last week.

Low progesterone?

Possible early MC? No clots, just blood.

Looking for suggestions or advice.

Or maybe someone who has period like this?

Maybe my new norm? I am regular every 28 days.

Thanks!