Bleeding after sex

I had sex on Saturday night and I started spotting the next day it was very light and it’s been light I barely get any blood on a small pad. I’ve had my period this month already so I know it’s not my period and I’m not having Any other period symptoms. I’ve had this happen before when I had sex with someone who was pretty long and thick and he even told me it would happen 🤣😅 I bleed for 4 days that time. Anyway this time with this guy I’ve had sex with him before but 10 years ago and we recently reconnected. he wasn’t thick or long he was pretty average in girth and below average in length (sorry not trying to sound like I’m bashing him 😅just want to be very specific) so idk why I’m bleeding and we didn’t have sex for long because he didn’t last and it wasn’t crazy or fast or hard so I don’t understand why I’m bleeding and haven’t stopped