Whats going on!!!!

Well, its a week to my official  pregnancy test and im starting to go crazy..   It was 40C today so i went to the beach to distract myself.  I work nights so i need somethings to do during the day..  After I came back from the beach i pigged out on everything, like hungry jacks, chocolate cake and other yummy foods.  I have been having sore breasts early in the morning, and tingling sensations in my boobs and tingle in my ovaries.   But then tonight at work i felt like my period was going to come.........  I cant wait till next friday so i brought a test from the chemist, which i shouldnt have cos ivf advised me not to do it and it came up negative..  Its either too early or just a plain big negative..   I want to know now, Not on Good Friday.....