I am ss you are going through such a hard time. Loss is so hard to have to deal with and to add others being pregnant around you, it's tough! My sister and SIL were both pg during my 1st loss, my sister again pg during my 2nd loss (along with 2 cousins and a bunch of friends). We all have to grieve our own way, but letting yourself be sad and upset about it is ok!
It's hard for your DF to understand what our bodies go through, but I am glad that he is at least showing his support the way he knows how. There really aren't words that anyone can say to make the pain and sadness go away, but we can listen and be here for you when you need a shoulder to lean on or have questions.
I can't answer anything about an ectopic, because I have not experienced one, but there are other ladies on here that I am sure can help