Hi I Think My Gfs Pregnant About 2 3 Weeks

Hi I think my gfs pregnant about 2 3 weeks ago I had her take a test cause she was really moody but it was negative but then her vag started to hurt during intercourse and her vag tasted like Penny's witch ik is a sign and lately she been having head aches heart burn and she complains her stomach hurts and she puked this morning when she woke upvis she pregnant? I'm gonna have her take a test when she wakes up