Pregnancy Blood Test Too Early?

I have been having pregnancy stuff for the past week and a half to two weeks - right after I think I could have messed up....disregarded it and chalked it up to possible flu coming on the first week but couldn't figure out why I was cramping all weird...not normal menstral cramps...funky feeling twingy cramps that happen at all times of the day and night - once so bad it actually ticked me...weird... started to hurt, but I just disregarded that as i normally have that during PMS...than I started to smell weird stuff..or just noticed it...duraflame logs at the supermarket made me hold my breath cause the smell was so strong...I no strangly hate avocado, brownies, and crave cheeseburgers when i never eat red meat...and now today I felt all queasy...first told myself it was my vitamen, but not later in the day when I just smelled a brownie and felt repulsed by it and ran to get yogert...than was hungry every half hour after that...and lightheaded whenever I felt hungry.