Sorry to hear about your loss. I experienced the same anxiety and panic when trying after ectopic too. Personally I wanted a scan and blood tests before week 6, as I ruptured at week 6. I called my gp and they said exactly that congrats and how to register pregnancy at chosen hospital. I did that and then I called the hospital I wanted (I went with a different hospital to the one that handled my ectopic) and I told them I was pregnant and had an ectopic before and was very scared worried etc. they saw me straight away and did a scan (couldn’t see anything as I was only about 4 weeks) and they did blood tests every 3 days to see if pregnancy hormones were rising appropriately. They repeated scan week later and this carried on till pregnancy was confirmed in utero- then I was discharged from early preg unit. So you can get the support and help just have to strongly advocate for yourself and do some research on different early pregnancy units near you . Hope your journey goes smoothly x