@leftitlate37 @ScottishLassie91 thanks! Could be dehydration, because cannot drink a glass of plain water either - atm sipping warm water and forcing myself to drink juiced water. Used to be a big fan of teas but sadly those are added to my aversion list as well.
@MagpieSong Oh, I never knew the link between blood sugar levels and headaches, will keep an eye on it too - the idea of having liquid food sounds good actually, I will try that. Thanks x
The only thing I can munch in without problem are nakd protein bars, so that is keeping me okay so far. Will keep a handful of them with me 
leftitlate37 - glad to hear about your experience with midwife, it would be really good to have partner for 12th week scan. Hope it goes well :)
ScottishLassie91 - Good luck for your scan on Monday :)
MagpieSong - I'm sorry to hear about your previous experience, it must have been stressful to go through and make those last minute changes. I hope this time you would have a good experience with your birthing center xx