Feeling defeated 😔

Hey everyone! Just wanted some feedback. I went in for my first ultrasound thinking I was 6 weeks 2 days pregnant. I ended up measuring 5 weeks 2 days and they were able to see yolk sac and gestational sac. Originally I was due 11/2 but based on this my due date changed to 11/9. They had me wait two weeks and go in for another ultrasound. I still was found to be measuring behind. I went in thinking I was 7 weeks 2 days and measured 6 weeks 1 day. They were able to see the embryo on the ultrasound and even see a heartbeat, though very faint. The heartbeat was low at 86. This changed my due date yet again to 11/17. I go back for another ultrasound on 4/2. I’m just feeling defeated like this is not going to turn out good for my baby. I’ve had no symptoms of miscarriage (cramping or bleeding) and I still feel very pregnant. I’m so sad about it. Trying to remain hopeful. I should be 8 weeks 4 days but measuring 6 weeks 4 days. I don’t know what to do. Any advice ladies?