Hi. i had unprotected sex with my girlfriend on the 30th day of her cycle a day before her period was due. two days later she had bleeding with clots but is light and intermittent. is she pregnant?

No...: Having a normal, regular period means one is not pregnant. Having sex after the period means one could become pregnant on the current month. If the next period comes and is a normal regular one, it means one is not pregnant, again. If worried or if one's period was not "normal or typical," one can do a urine pregnancy test the week after starting the abnormal period, or 3 weeks after having sex.