Hello, I am Dr Owen, I am a Board Certified Ob/Gyn Medical Doctor and I want to help you.
How often do you have a period - usually it is between 24 and 35 days?
okay well you are VERY safe
because with a 28 to 30 day cycle you would have ovulated on days 14 to 16
and the earliest point of having had sex to possibly get you pregnant would be about day 10 or 11 of your cycle
So, given there was no sperm and WHEN you had sex, I would say you will NOT get pregnant.
I hope this helps
and you can relax
If you have more questions, please ask
Please click on EXCELLENT for helping you
you are very welcome
Any time I can help, I would be glad to do so