Bleeding from sex or bloody show?

B
FTM 40 + 2. I had sex last night and noticed some light bleeding afterwards (which I know is totally normal). This morning - 9+ hours later - I went to the bathroom and noticed a mucusy discharge with brown tinged blood. I've been loosing cervical mucus everyday, but this is the first time with blood. Would that have been my bloody show? Or do you think that the blood was caused from sex last night?