Positive tests but the blood results are negative

Sapphire • Full time mum taking everyday as it comes

I feel pregnant nauseous, aversion to food, saw boobs, cramps. I have had a really funny bout of bleeding. The blood results came back negative but I just know I am. Has this ever happened to anyone ?

Spoke to the doctor he said they were too low for a viable pregnancy and that I shouldn't be getting positive tests. But I am. He said wait a week and we can do blood again but im just so upset