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If you had sex on 8th july and immediately you have used Unwanted 72 then the chances to get pregnant are hardly there so first of all confirm that there is pregnancy
.Also you said there was bleeding on 28th july which again suggests that there is no pregnancy.Just based on your thoughts you cannot say that there is pregnancy.Tell your friend that pregnancy can only be suspected if she has missed periods;has symptoms like nausea;vomiting;lower abdominal pain;breast pain
which are commonly seen in pregnancy.Also she as well as you need to understand that being hormonal
the tablets unwanted tablet can cause disturbance in periods leading to the feeling of being pregnant;please tell her to get tested first.Most probably she is not pregnant and does not need any medicine.