Pain after “Early Miscarriage”?

Chelsea

2 weeks ago I got a positive pregnancy test. Went in for labs and my levels were low and continued to drop. My doctor was absolutely horrible and refused to give me a scan or even have me come into the office. I had 3 sets of labs done, first my levels were 17, then 15, then 4. After the third blood draw my doctor has her medical assistant call me to tell me I was having an “early miscarriage”. I would’ve been 5 weeks that exact day but with my levels that low I knew it wasn’t going to progress. I asked if the miscarriage was considered s chemical and none of my questions were answered. I am assuming it was a chemical considering my levels, how early I would’ve been, and the bleeding that was pretty much a heavy period. Anyways, that same night (about a week ago) I started to bleed. It wasn’t terribly heavy and I didn’t cramp to badly at all. I passed what I think may have been some small tissue or clots. After 4 days the bleeding stopped and I haven’t bled since. Today though I’m having pretty intense back pain. Wondering if this is normal?