Hi, Im A Bit Worried About My Girlfriend. Shes Having

Hi, im a bit worried about my girlfriend. Shes having weird pains around her belly, i told her it might be her period (because its due tommorow) but she said the pain was totaly different it was all around her belly. Im a bit worried she could be pregnant, but we wouldnt know until she missed her period. we had sex around 2 weeks ago without protection, and i read somewhere that it is her fertile window, so im very worried about this could you explain me whats happening, and what should i prepare for this case.