Advice

I'm new to TTC and I am a little confusd and have a question. I had a period on October 25th. On November 20th i started bleeding. It was very usual. I bled very light and very little for 3 days then it stopped. I had no cramping, and i usually have Diarrhea and i didnt. My periods are normally heavy heavy and painful. Could this have been inplation bleeding or something else related to pregnancy? I dont want to test or get my hopes of if it was just an off cycle. Im not sure when implantation happens or if bleeding like that is a sign of pregnancy.