Is my girlfriend pregnant? HELLPPP!!!!?

Me and my girlfriend have been having sex for thw last couple of weeks without protection but she is on the pill. We are worried now because her period was two days late and she had heavier bleeding than usual. It stopped after two days, then started again. She has had nausea and puked a couple times but only at night time. Shes getting tested in two days but i need honest input. Please help