Spotting now frank blood, appt @ 2pm

Hi there, I'm 7w5d and have been spotting pink/brown for the past 5 days. Today when i woke up, I saw a swirl of blood in the toilet! When I wiped there was frank red blood on the paper, but oddly enough there hasn't been any more! I have an appt at 2pm, they said they can't guarantee I'll get an ultrasound, but that I'll def have lots of lab work. I'm 35 years old and have a 2 year old son. Guess I'm just looking for some comparable situations, good bad or indifferent from those that may have had this happen to them. Would love to have an ultrasound to see if there's a heartbeat but guess I'm at my doctors mercy. Does anyone know, if this is a miscarriage, if I will pass it on my own? ? Any insight would be helpful. Thanks in advance