Im worried my girlfriend may be pregnant?

ok well 2 weeks ago we lost our virginity to each other. and i did all my research but of course in the heat of the moment i didnt use the knowledge i apprehended on the internet. it was her ovulation time and we didnt use protection and umm yea i did inside. i know it was stupid of me but everyone makes mistakes and i hope i dont pay the ultimate price :( well she has had a lot of the symptoms i.e spotting a week after, tenderness of breasts, nausia and fatigue, but she got sick like 2 days after we had sex and she thinks its the flu. its been nearly teo weeks (Saturday) and she id taking a pregnancy test on friday. she has suuuuper irregular periods so we cant trust the late period test. we are both worried and i want to know what the people of yahoo think. oh none of that you shouldnt be having sex unprotected crap ive heard it all. i just need to know your input. greatly appreciated