Light bleeding after sex?

Yesterday was my first day of ovulation so my husband and I had sex! A few hours later I went to the bathroom and noticed light/pinkish spotting. Today it's darker but more light brown than red, but still happening. I have never bled after sex before so just curious if this is common or more of a problem to schedule a dr. appointment?? First TTC so very new to the whole process! 😁 Thanks for any advice.