Super Worried about Etopic! CP -> HCG Rising after AF

cxsimo08

Ladies! I need your help.  

I posted in the infertility board but thought this may be a more appropriate location.  My husband and I have struggled with infertility for 3 years. We've had 2 failed IVF's 6 IUI's with the 5th resulting in a CP. This 6th IUI we ended up with a very low HCG at 14DPO (HCG 12). It continued to stay very low at 17DPO and 20DPO (14, then 13) so our RE said it was a CP and to stop suppositories and expect to miscarriage. That's when things have gotten weird. Since, I miscarried and got a full AF but, now at CD6 my HCG is RISING, albeit super low (HCG 20). I got a scan and baseline blood work which confirmed I got my period (lining is nonexistent) but took a HPT this AM and it's getting darker. Why is my HCG going up after AF!? Is this an etopic? I can't find anything similar like this with low rising HCG and no progesterone - but it's just so weird. What do you think!? 

Here are my weird stats this cycle:
8/24: 14DPO - HCG 12, Prog 12 
8/27: 17DPO - HCG 14, Prog 9 (stopped suppositories) 
8/30: 20 DPO - HCG 13, Prog 1
AF - 8/30-9/1
9/4: 25 DPO/CD 6 - HCG 20, Prog 0.4, E2 77

Help, advice, stories, etc. appreciated good or bad, just looking for info! I'm super nervous. THANK YOU!  

Christina