Implantation occurred but pregnancy not confirmed

Hi Friends,

So I just got my FET results today that they’ve detected implantation but hcg is at 4mIU/ml. That hcg level is very low so it may not be a “viable” pregnancy. I’ve been asked to get another blood test done next week to see if hcg has increased. I am wondering if any of you have had a similar experience and if it ultimately went onto a full pregnancy?? This is my 4th cycle and the volatility in emotion I felt in the last hour from reading the results to then discussing it with the doctor, has sent me in a doozy.

Is there any hope? 🙏