Persistent Negative Pregnancy Tests & Delayed Period: Seeking Medical Guidance

Question
hi Lilly..hope you could help me on my problem..
here is my situation.. last 2 weeks i had done a home pregnancy test (a cheap one) then the result was positive..i was 2 weeks delayed then by the way.Then went to the OBgyn doctor that afternoon,she conducted the same urine test and INternal Exam..both came negative..after 2 weeks and now im 4 weeks delayed, went back to the Obgyn but a different doctor..also conduct again a urine test and IE and Negative results were given..she also told me that if im pregnant,there would be changes internally in my uterus or some parts...but i have symptoms like vomiting sometimes,delayed,cramping and belly aches at night..Pls help me on this..i dont what to think anymore.Is my Obgyn right?or is there a possibility that they are both wrong?..Thank you and hoping for quick response :)  

Answer
Hi Lina,
did your ob draw blood for a blood pregnancy test or do an ultrasound? if not either go back and insist on one or go t your local ER and complain of your symptoms and tell them to do the test and ultrasound and call your ob or another in with the results.