Doctor told me that I'm not pregnant!

Jennifer
UPDATE: went to the ER. Got an ultrasound and found a sac but very small because I'm just 5w5D. Did my HCG counts and are467. They ask me to get tested again in 2 days and another ultrasound. Dr was concerned of another ectopic. I still have pain in my right side today.. don't know what to think.......  
I went to the Dr. after having some cramping and a pink discharge in the morning. They made me pee in a cup and did an ultrasound. She told me that I might me to early and can't find the sac, the. Left. After a while she came back telling that my pregnancy test were negative. What! I had 2 test at home telling me positive and very bright line... she told me to do some blood work and wait for results.. my husband want to take me the ER. Cuz I had a ectopic pregnancy before and end up removing one tupe. He doesn't want me to lose the other one and lose the change to give him he's second child.. should I wait or go to the ER?