So very confused! Help!

Im posting this to hopefully get some hope and positive stories. We are trying for Rainbow baby number two/third child I have two little boys my second a Rainbow baby who’s a year old already and the other my first child who is now almost 4. Anyways i took 5 pregnancy test different brands and all positives but I’m very early. So I go to the hospital cause my doc ask for a blood test i take two test, the nurse calls me to tell me my test is a BFN.......

the symptoms i have and my home test tell me otherwise. I could understand one test positive and the rest negative then maybe a faulty test but all 5 BFP!! Im so very confused and wondering if anyone else had positive home urine test and a neg blood test and still end up pregnant? Maybe its to early?? Help!!