I went to the doctor recently to see about my blood levels- I was trying to get my blood count and b12 and iron up, as I was taking the suplments but for the last month I have been vomiting a lot mostly around meal time. I can't eat a full meal some times and the vitamins I take some times come up. I burp alot- have gas, am consitpated, dizzy, and vomit. He did a pregnancy test butmnyperiod is not due for another 2 weeks and there is a chance it could be pregnacny- how accurate isa test at 2 weeks before your period