Spotting again??? Please help

Kristen • Ttc#3. Currently have a 6 year old daughter and 19 month old daughter. Married to my husband may 2014.
2 days ago at 1dpo I had mild cramping and spotting in the evening. Next day it was completely gone. Now this morning I'm spitting again. I'm 3dpo. What is going on? I had some cramping last night too.