I had unprotected sex september 12 2021 he nutted in me & my last period was august 28 & i have a 26 day cycle will i get pregnant & when can i take a test ?

Asked and answered. The chemicals made by conception that turn a test positive are generally present at the time of a missed menses or 2 weeks after exposure. Testing too early can lead to a false negative test while a positive is usually accurate Cramping by itself is not a dependable symptom of anything. Test anytime and as often as you wish. You may or may not get pregnant with that exposure.

If you do not wish to get pregnant, take Plan B within 72 hours of the episode of sex. The sooner the better. Get HPV and Covid vaccines. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines