Suddenly No More Nausea And Tiredness After 8 Weeks

Hi all, i am 8 weeks pregnant now and i felt very tired and had severe vomitting for the past few weeks. Suddenly, i dont have any of them today and i feel like the time before i got pregnant. Is this normal? This is my first pregnancy. I am abit scared that something bad happened. There is no red discharge or bleeding. Can someone please advise me?