Had sex on the 28th last period was from the 13-19th of july, guy didn't ejaculate, took plan b within 60 hours is risk of pregnancy low?

If unprotected: intercourse occurred, you can assume that there were sperm cells in the secreted male sexual fluids and since you took Plan B, I assume no condom was used, so get tested. Plan B is most effective if taken 24-48 hrs after penetration/ejaculation, ( not 60 hrs,) and...you are most fertile about 2 weeks after the start of your last cycle: around July 25 onward- there is a possibility. of pregnancy.