Symtoms reducing after 10 wks

Hey ladies, I have read that after 10 wks your placenta takes over and you symtoms reduce, similarly once I reached 10wks my nauseousness reduced to 20%. I have my next scan one month from now. But wanted to know even if symtoms is reducing the baby is fine? First pregnancy for me , had a MC last yr. please share your experience after 10weeks. Thank you!