I went to have a scan on Friday at 5w 3d, and there was nothing there at all, no gestational sac or any evidence of pregnancy. The technician said "Either you're not pregnant or it's too early." I've had 3 BTs each 3 days apart that came back 152, 330, and 760 hcg, so I know I am pregnant, though I have had no symptoms. They ordered another BT but I won't know the results until Monday. In the meantime, I've had brownish-red spotting. Am I having a m/c? My last one was at 12w, but scan showed bub with no heartbeat. This time there's nothing at all! Or could it just be too early to see anything on the scan?