Confuse which doctor to believe.

So what happened was, i was confirmed to be pregnant by a doctor at the polyclinic by my CB tests which I took five positives but I only showed two recent ones to the doctor. He wrote in referral to KKH (so obviously i am pregnant)and im going to have my first appointment at KKH next week. I got spotting yesterday and I panic because of my miscarriage history, went in to NTFH A&E and they did a blood test which said im not pregnant. Now im having lighter bleeds but not enough to fill a pad and no cramps. Im just thinking this could be just it you know. Anyone got experience as me? #advicepls