might my girlfriend be pregnant?

my girlfriend and i had sex. a few days later, she had her period. however, she is late/has missed her period this following month. is there any chance that lingering seminal fluids impregnated her after her period?

[notfreakingout]

i should mention that she has been feeling sicker and hungrier than she normally does.

[AnnieBrooke]

Was the only time you had sex, the time before her period?  Has she taken a pregnancy test?

[notfreakingout]

it was not our first time, but we have not had sex since then, if that is what you are asking. she has not taken a pregnancy test. would it be accurate at this point?

[AnnieBrooke]

I was asking if you had sex after her last period.  If not, there is little enough likelihood she is pregnant.  But to be sure, yes, she could take a pregnancy test.  If a lack of period is caused by a pregnancy (i.e., if enough pregnancy hormone is in her system to stop a period) that is enough hormone to turn a test positive.  Be sure she tests with first-morning (concentrated) urine.

[notfreakingout]

thank you very much for the information. she is known for being "unreliable", but typically not to this degree. i appreciate your knowledge.