Silly HCG question / miscarriage

Ki

I had a miscarriage last week. It happened I think 3 days after missed period. At the start of bleeding and 2 days after my hcg levels dropped. I know this is a long shot and I dont have my hopes up what so ever. BUT CAN HCG LEVEL GO DOWN AND SEEM LIKE MISCARRIAGE AND THEN BACK UP?

I am certain this is impossible, and a stupid question. I've accepted the fact that I'm no longer pregnant. But I keep getting sick out of no where and super exhausted. My last miscarriage was at 8 weeks, so I still felt pregnant after a week as my body adjusted. This time I dont think my body would still think it was pregnant, as it was so early. But smells are too much right now. It's weird. Just curious.