If u have unprotected sex 5 days before she got her period can she be pregnant? she has irregular cycle and missed her period for 2 months before that

Hmmm....: Women who have an irregular cycle do not know when they are 5 days before their next period, because they don't know when their next period is supposed to come (the best they can do is guess). That's why such women's menstrual periods are called "irregular." If having pregnancy worries, one can do a home pregnancy test 3 weeks after sex. The results are very accurate by that time.