simc on "Is this normal for natural m/c?"

Please help! After beta and u/s hell, at my 9.5 week u/s, I found out I was going to m/c. That was 6/3. On 6/8, I began to bleed and 6/10 u/s showed that I was m/c'ing naturally and no D&C was needed. I continued to bleed/spot until 7/2 (25 days). During that time my hcg was dropping, I thought it was finally over. My 7/2 hcg check was 280, so I thought it would continue to drop over the next few days and be 0 at my next appt. My next check was on 7/14 and it had only dropped to 111. On 7/22 I started bleeding/spotting again. My next hcg check on 7/24 was 68. I have continued to bleed/spot since then and I refuse to go back for another hcg check until all the bleeding has completely stopped.
It's been 24 days since I started bleeding again. Is that normal? Why is it taking so long for it to stop? I am calling my nurse today to find out b/c I just want this to be over already. Is there anything they can do at this point? D&E to get rid of the remaining blood? Any feedback is greatly appreciated!