Help Me please😩

Well My Last period ended 8/13 i Had Sex 8/15 So when my period ended that following day i had no red discharge ,no clots ,anything ! So i had sex two days after my period so now its been two days since i had sex and ive been having this red water like disharge and it doesnt smell like regular period blood ive been having what feels like cramps in certain areas and i dont know what to do should i see my Ob or is this normal