8 weeks, light brown discharge

i had my first prenatal appointment on the 19th of May, everything looked great. baby is measuring perfectly and the heart rate was 132 at 6w6d. i haven’t had any bleeding, cramping, spotting the entire time until the last three days. every time my husband and i BD i get light brown spotting afterward. no cramping accompanied with it, but very unsettling to see. i’ve read this is considered normal and common, but i was looking for anyone experiencing something similar that had everything turn out fine. thanks in advance.