Awwww bless, cant really give u any advice on this as i havent been there yet, but my mate had "morning" sickness day and night when she were having her first, and i have heard it can come on at any time of the day, so dont worry bout that-deffo do wat lottie said and go see wat ur docs can advise ya
Can we see your scan pics? and are you finding out if u are having a girl or a boy???
hope the sickness passes for you quickly and you embrace and enjoy every stage of your pregnancy-it will be well worth it