Incomplete Miscarriage or Another Miscarriage

May 30 I started spotting and went to ER. They told me my sac was measuring 5w 4d, when I would have been 8w 2d.

May 31 I passed the sac (blighted ovum), a long with clots and tissues for a full 7 days.

I let me doctors office know, but they never had me come in for a follow up. I took pregnancy test every day.

June 10, 11, 12 my test were all negative bone dry.

July 2nd still no period, test negative not even a shadow.

July 6th I got a positive pregnancy test. Blood drawn at doctors for hcg levels.

July 8th it was my second blood drawn to see if doubling.

July 13th they told me it was confirmed to be doubling. That I was pregnant.

July 15th I went to ER for shooting lpwer back pain. The ER doctor told me I was having an incomplete miscarriage. My levels were 465hcg I would have been 5w 2d (I think).

July 20th my doctors took my blood again today, no ultrasound too check levels.

My question is has this situation happened to others and it was another miscarriage? I'm thinking it's another blighted ovum. I don't think it was an incomplete miscarriage. I told the er doctor my levels were double and confirmed and he still told me it was an incomplete. I did not get to see ultrasound as they dont show them. I've had no bleeding, but some cramps here and there. My doctor is dragging his feet on this and I'm so devastated. I just want answers and I've got none.