Someone explain...

Ami • Follower of Christ, married and pregnant with 4th baby!
to me what a Chemical pregnancy really is.
​I was ovulating when I had my IUD removed and my hubby and I did some baby dancing quite a bit. 
​A week later I had a 2 day light AF and the thirds day it was barely anything.
​A week went by and out of the blue I had this horrible dull cramp on one side. I used the restroom a little later and had some light pink blood.
​A few days later I felt ver hormonal and a week later AF came for 5 days.
​ 
​I am confused. I never tested but I don't know what happened.
​Anyone ever deal with this?