Brown spotting only when I wipe after sex and orgasm. How long should it last?

Had sex Sunday had brown discharge when I wipe. Husband and I decided no intercourse til our first appt. we were messing around for Valentine’s Day (Wednesday) and i had some more brown discharge (a little darker this time) after I’m assuming the orgasm (clitoral)

So now I’m putting myself on pelvic rest til my 8 week appt. (I’m 6 weeks)

If it is caused by the intercourse and orgasm how long “should” this last?

Not on my underwear only when I wipe on and off