ER doctors

My husband and I went to the ER a week ago because I was bleeding heavily. We thought we were 6w5d, but our baby measured 6w0d. I asked the doctor what the heartbeat was and she said "well, it was like 60bpm." My husband and I have been having a tough week... fast forward to today when I finally get the report and it said the heartbeat was 86bpm! Yes that is on the low end, but way better than 60! We have a follow up ultrasound tomorrow with my ob/gyn and I really hope it is good news..