Thanks for writing to us with your health concern.
You are healthy, with no ominous history in the past.
You can wait and see if this was a one - off event.
If post coital bleed / spot recurs, yes, you should have an appointment with your OB - GYN.
Go for an internal exam, a Pap smear and a pelvic ultrasound scan.
And do not worry, it does not sound like you have any issue, it appears that the rough sex was the problem.
Cervical cancer is a very radical diagnosis , relax.
But have an assessment next time that this occurs.
All the best
Please feel free to discuss further.