Unfortunately it looks like you had a miscarriage.... you're levels wouldn't drop.. I'm very sorry this happened again.. and with a miscarriage you can feel symptoms for a bit after it happens..
After my miscarriage I had symptoms for a few weeks. Plus my hcg level took 9 weeks to go back down to 0.
After a miscarriage you could still have some symptoms.
Your numbers would not be dropping if you did not miscarry. Sorry!!!!!!!! I would recommend having an ultrasound done to make sure you passed everything. I hope this is not the case.