So upset

7w 4d with spotting (so lightly) 2 days but stopped after 2 hours. I've also had cramping but I've read it can be normal. I've had 4 miscarriages so everything makes me jump but have never made it this far before. I woke up this morning and my boobs feel normal...I'm debating calling the doctor to go in tomorrow if possible, I just wanna hear a heartbeat. Anyone else have a story like this? Thanks