18w 5days sickness

So every morning I wake up feeling sick I’ve been off work all week, the start of the week I was being sick one day and the next just heaved, the past 3 I haven’t but felt like I was going too, I have started having some belvita biscuits to try and help, I had my bloods done at the drs request to check for dehydration but checked my results yesterday and they came back no Acton normal for pregnancy! I feel fine in the afternoons but mornings are such a struggle!! We go on holiday next week and it’s an early flight and I feel like I am working myself up as I am scared am going to be sick on the plane etc anyone got any advice or had anything similar 😞😩