we didn't use condoms...

Hi,
Welcome to ehealthforum,
The chances of pregnancy are high if she was during her fertile days at the time of sexual contact. The pullout/withdrawal method of contraception is known to be associated with highest failures (pre-cum/pre-ejaculatory fluid is known to contain sperms and no man can be 100% sure that pre-cum/pre-ejaculatory fluid did not leak out during vaginal penetration). If urination has been done prior to intercourse/sexual contact, chances of sperms being present in the pre-cum are less. If there has been a full ejaculation inside, chances of pregnancy are possible (especially if she was during her fertile days at the time of sexual contact). If she is worried about pregnancy chances, and not ready for pregnancy, she should have considered taking emergency contraceptive within 48 hours of having intercourse to prevent pregnancy. Wait and watch for her next periods. She should visit her doctor/gynecologist for further evaluation if periods are missed or abnormal, or if she suspects chances of pregnancy. If pregnancy gets ruled out and if you intend to remain sexually active, you should consider getting her started on suitable regular birth control measures to be protected (after her periods). She should be regular with birth control use as instructed. Avoid having unprotected sexual contact if you are not ready for pregnancy, and avoid repeated use of emergency contraception.
Take care.