Chemical pregnancy

I had a chemical pregnancy on nov 29th. So far I am on CD 41. Yesterday I had very light pink spotting. I assumed it was my period restarting. However still no signs of AF. All hpt have been BFN. I’ve never just had spotting like I had yesterday. Anyone experience something similar? I have no idea what is going on with my body. Usually my cycles are 29-33 days long. Did the chemical throw my body off? Is there a chance I’m really pregnant? I’m just confused!