Week 7 - good days and bad days- anyone else?

SJ

So I'm now 7 +4 and had to phone in sick for work today. I have had to do this once before on week 5 because I just get some random days where I'm so sick and exhausted I can't function, yet the majority of the time I have manageable nausea and I can make it through the working day without too much of a problem. Is anyone else's symptoms this inconsistent? I worry that it looks bad to my work, although they have been very supportive