so I had 4 positive pregnancy tests. they were faint but clearly positive. well I didnt take any tests yesterday and I took one today to see how much darker the line was and it was a fainter positive. very faint. I got scared and went to the doctors and their test was negative. I explained my situation so they drew my blood amd I have to wait for the results. I just took another test and its a faint positive. what does it mean if its fainter than the originals? am I miscarrying?