I was seen @ 5wks 2days due to spotting and mild cramping got an ultrasound but was too soon to see heartbeat and determine if my pregnancy is viable or not. I was given a 50/50 chance. I am scheduled for another ultrasound to try and hear heartbeat @6wks 2 days. (This Thursday) I have been spotting red/pink/brown off and on since Saturday and freaking out. Should I call again or just wait until Thursday since they can't do anything anyway.