Weak Heartbeat at 7+1 week

Hi Mummies, just had a transvaginal scan at the doctor’s and we found that the heartbeat is very weak at week 7+1. Doctor is very concern and said to bed rest for 3 days before going back to him. I am very affected by this and would like to seek console / advise from other mummies if there is a still chance my baby’s heartbeat will get stronger soon? 🙏🏻