My second beta was thursday and it dropped from 73 to 33. The nurse told me to expect mc over the weekend. I haven't had a cramp or even a spot of blood. I took a hpt to see if it was any lighter and it was actually darker than my previous ones. Now I am freaking out. As bad as it sounds, I just want to get this over with so we can move on. I know it can vary from person to person but how long did it take for your mc to start once the beta dropped?