hi,thanks for query.As long as there is no penetrative act the chances of
pregnancy are not there.There is remote possibility has semen has come in contact with vagina,in very rare setting the sperm can crawl all the way up.The day you had act is in mid of cycle which are fertile days,but to sum up,if luck is not in your favor,then only she can get pregnant.Wait for periods to come and then decide further.
I pill may not be effective to 100% as not taken in time.
wishing you good health.