Hi there.
It is too soon to comment about her pregnancy. Bleeding could be her periods or even due to ovulation. Chances of pregnancy after protected intercourse are very less. You can wait for her periods or in case she misses them, get a urine
pregnancy test done.
Please visit a gynaec for proper contraceptive advice and about guidance on reproductive health.
Regards,
Dr shikha shah
Ghatkopar west
Mumbai