Help please

L • 🇬🇧 Mummy to a 💗 4yo 2015 💗💗 2yo twins (One stillborn 🌻) 2018 💛 Ectopic March 2019 💗 Baby due Sept 2020

Long story short:

11th Dec - LMP (35-40 day cycles)

1st Jan (or near) - Possible ovulation due to pains and cm

13th Jan - vvvvfl

16th Jan - Ultrasound saw nothing and HCG 120

18th Jan - HCG 275

27th Jan - Ultrasound saw the sack and yolk sack. Measuring 5 weeks(ish)

Back for an ultrasound in 7 days time.

My question is that I thought I was either 6/7 weeks. Has anyone been through this and the baby has never progressed but next ultrasound. My anxiety is through the roof and I have had a bad feeling from the start. Previous stillbirth and ectopic and just worried.

Any advice good or bad please

Thank you xx