is my gf pregnant

My girlfriend is worried that she is pregnant as we close to having sex last week like my penis was in her but not all the way cause it hurt her to much, it was unprotected and there was abit of precum but that had dried away already and I didn't ejaculate into her, but lately she has been feeling sick and today she started getting stomach cramps, she's had no spotting and she says she always has discharge since before this incident