Implantation bleeding or af? Help🙁

Has anyone ever had not heavy but medium IB? Af wasn’t suppose to come till Sunday. I started spotting yesterday, then had light bleeding then it stopped out of no where. Around evening the bleeding started again and is still going but isn’t heavy at all (normally af is SUPER heavy) so confused on if it’s af or IB 🙁 anyone else had anything similar or heavier IB which you thought was af?