Hi, was the line previously darker? I wouldn't compare it to the control line, but would probably compare with the previous tests because the lines shouldn't be getting fainter. If the scan shows all is well then I wouldn't be too worried. Btw what colour is the bleeding? I had brown colour bleeding 2 days ago and they said brown is still ok, then they gave me a proluton injection to stop the bleeding and I'm also taking Duphaston. Also, if there isn't painful cramps accompanying the bleeding, it should be fine. Don't worry too much!
XY