Could I Be Pregnant? Community

So here's the deal:
I have had a previous miscarriage at about 8 weeks. I started spotting for a week and then started bleeding. The bleeding was VERY heavy and had some moderate to severe cramping. I seriously couldn't get off the toilet for days.

I found out I was pregnant again a couple months later. Three days after I found out I was pregnant, I started spotting and then the next day started bleeding. It wasn't heavy, mostly like my regular period really. I went to the ER and they told me I was having a miscarriage. He said that my levels were "non-existant" and that based on the fact that I was bleeding, he deducted that I was miscarrying. He did not do a pelvic exam. He didn't feel it was necessary. I decided since he said that the miscarriage was complete that I wouldn't follow up with my doctor. I've been through it before, I didn't want to go back and forth to the doctor for them to tell me that everytime I go to the bathroom, I am flushing my child down the toilet. (Sorry if that is harsh, I was just mad and upset that it was happening again. What did I do to deserve that?) I bleed for about 5 days (just like a period, not heavy at all, just normal. I never bled through any pads or anything like that) and then it stopped. It seriously was like a period. Started light, got a little heavier, then tapered off. I never saw any real "chunks" (sorry if TMI). It has been 13 days since I stopped bleeding and I still feel pregnant. I'm getting hot flashes, I've felt nauseous here and there, and I just FEEL pregnant still. Is it possible that the ER doctor was wrong? Could I still be pregnant and just have had low HCG levels?