Which pill is good to prevent pregnancy after had...

Emergency contraception pills are the best solution in your case.
According to the recommendations of the World Health Organization (WHO), in this case, one of the following is taken:
1) Levonorgestrel 1.5mg: once
note that the drug is taken within 5 days of the date of intercourse. The efficacy of this contraceptive drug is 55% -98%. According to the date of taking the medicine.
The more the medication is taken after a shorter period of intercourse, the higher its efficacy. Meaning that if it was taken after hours of intercourse better than taking it after days of intercourse.
2) Ulipristal acetate 30mg for once:
the efficiency of this drug up to 98% to prevent pregnancy if taken within 3 days of intercourse and not after 3 days.
These drugs prevent pregnancy by preventing the sperms from fertilizing the egg