All the sudden nausea stopped..?? Info please

I am currently 17 weeks pregnant and between week 16 and 17 I now wake up fine without puking I can go longer without eating and feel almost normal again and it lasts all day . I was sooooo sick from 5 1/2 weeks to 16 weeks and to wake up and feel so much better worries me now . I don't have a doctors appointment for 2 weeks . Is this normal ? Anyone else wake up one day and just feel fine ?