Having inplantation bleeding! When did i get pregnant?

losingmyway

Hey I’m trying to figure out the date or around the date I may have gotten pregnant! I have had 2 partners and mistakenly don’t know if it’s one of the other. My implantation bleeding started jan11th and period was late. It only lasted 2 days with negative pregnancy result. Help!! Last times I had sex was dec 30 2019 and January 5th 2020