Some days I feel OK and the next day it comes back. Think it's normal as long as don't suddenly have bad cramps and bleeding. I take these days as a bonus now haha
Don't worry. Some days will fine as the hormones fluctuates. As long as you are not spotting or bleeding it shouldn't be a concern.
Morning sickness comes and goes. Do keep a look out for any severe cramps or bleedings. That needs urgent attention.