I am so sorry for your loss.
I’m currently recovering from my eptopic pregnancy and have the same concerns for future pregnancies. I was 7 weeks pregnant when I started having severe cramps, nausea and vomiting. I saw an out of hours gp, my emergency gp and a&e nurse who all said it was likely gastroenteritis. Two days later I was booked for an internal scan in the early pregnancy unit where they said they couldn’t see anything in the womb and a shadowed area by my ovary. I was rushed into surgery not long after.
The scan was pretty visible to the doctor but my main concerns are what if the professionals aren’t able to pick up on the signs beforehand. The EPU advised me to let them know as soon as I have a positive pregnancy test in the future to do an internal scan, but the worry is still there.