My girl and I had protected sex like 3 times in may 2013. She is not on any birth control. Her period is suppose to come on on today may 24 but hasn't yet. The day before may 24 she complained of cramps and breast sore. She also says that she do have irregular periods. In which her period came on last month. Could she be pregnant?

Yes, she could be.

Is she? Don't know.