2 "False" positives?

Yesterday morning (Walmart cheapie) and this morning (clearblue plus) I took a test. Both vvfl. But visible. I went to the Dr for confirmation. They did a urine test and ultrasound. Said they didn't see anything in my uterus and the pregnancy test was negative. And said my hpts were false. I told them I recorded the result within the 3 mins. And asked for a blood test. They refused. So basically I'm livid. Why would they deny me that test?? So now I'm just sitting here thinking I bought faulty tests and I'm not pregnant. The want is so real. I don't understand anything anymore.