Positive hpt, negative blood test? Help please

ambyr
According to my lmp I'm 4w 2 days today, still getting positive tests everyday since last Wednesday, each getting just a slight bit darker. Friday I went and had blood work done that they didn't call me back about until today which they said was negative. I told her I've been taking my hpts everyday and still positive. She was slightly confused and said she would discuss with doctor and get back to me tomorrow. Ugh! Now I've googled several things in the past hour since I got the call and ppl have said that there's 2 blood tests that could have been done, a beta and a POS/neg. And if it was the POS/neg one that they did, it could have been too early and not as sensitive especially since Friday would have been the day before my period was actually due( 3w 6d). It kinda panicked me, I'm a little calmer now but I was wondering if anyone has had this happen?? Did everything turn out OK? Here's my first test on Wednesday, Saturday then today. It's definitely there! Lol similar stories with good outcomes appreciated! Thanks