Advise.!!!!!!

Bussel
Hi... i just wana ask. I had a d&c 3weeks and 2 day ago. But the day before my d&c my HGC levels were 20. I had spoting for a week after d&c. And started to bed again but had no plan to start ttc again. But is it possible to get pregnant straight again after d&c ? And the fact that my HGC levels were 20 does it stil stay in my body after d&c ? I was early in my pregnancy say around 3 to 4 weeks.