spotting for days after period

Du

i’ve been spotting for 4 days after my 7-day period ended. i set an appointment to see my doctor but i’m worried of somehow having an infection that might affect ttc. has anybody had this and was fine? my appointment is in a week and a half. extra info if it matters: my boyfriend and i had sex during my period and everyday after. we’ve done it many times before and no spotting previously. i wonder if it’s just something with a sensitive cervix during period or if it’s an infection because i read that’s what spotting can mean. and i read that the infection can affect fertility 😩