My gf and i last had sex on the 17/1/2016.period came 4th/2/2016.it ended 6days after.today she saying she saw a pinkish discharge.is she be pregnant?

Presume not pregnant: A woman can presume she is not pregnant if she has a normal menstrual period and has no symptoms of pregnancy. She can do a urine pregnancy test if she is worried. The test is accurate if done correctly and done after a missed period or 3 weeks after having sex. Pregnancy tests are inexpensive and are sold in stores everywhere.