I have taken 2 clear blue pregnancy tests and they

Patient: I have taken 2 clear blue pregnancy tests and they came back positive 2-3 weeks, i then went to my local chemist and did 2 of their pregnancy tests and they came back strong lines and positive if i go to the doctor and the test comes back negative does this mean i have lost the baby as its only a few weeks in and if so will i know before i lose the baby by any bleeding as i am scared

Doctor: