I am so glad you got the fit note! well done. My fc don't want me travelling at all, which was why I told work about the ivf as they were trying to send me to japan, brazil and mexico!! and really why take the chance if you don't need to.
Ah yes HCG levels, got it, I thought there was a new fangled pee stick that told you and I had somehow missed this amazing thing! but no, a blood test makes far more sense!!!
but dude, as of right now, you are are pregnant, focus on that. revel in it! forget what you should be numbers wise!!
xx