Is this normal??

Some mornings I wake up and I am so sick I can't even get out of bed to make myself breakfast, other mornings I wake up and feel fine and I always wonder if that is a bad sign.  Is t normal for those symptoms to be worse some days and better others? I have had some complications but I am pretty sure they are all better now by I am still worried that I will miscarry. I'm about 7 weeks right now.