Early pregnancy or Early Period

Sooo I'm 10 DPO and my bbs have been a different kind of sore since 4 or 5 dpo. I have been extremely tired and today I started having cramping pain and pinching feelings in my uterus. I got up to see what it was and there was light pink discharge and later a more brown colored discharge My period isn't due until the 15th. I got a positive opk on the 30 of Novemberbut I used Fr opk digital and it wasn't positive until the 1 of december we Bd every day until the 3rd. I really want this to be our month we have been trying for over year and have had two surgeries in order to help fertility. Praying for a miracle baby but either way it is well with my soul.