I came off my period on the 13th of February , every night since , my and my oh have got jiggy! ( been trying for little under three years now )

I notice a brownish reddish discharge after we have sex yesterday ( 6 days after I have come off ) and I'm still getting it now on and off when I wipe ! Any suggestions ladies ? Or do you think it's just old blood making its way down slowly 🤔