hm.. over here in australia we have a totally diff medical system...
with the pill, your mum shouldnt notice any changes i mean you still get your period, but its on time and regular.
but you could go to a different clinic that you've never been to with your b/fs mum and they'll make up a whole file for you under you name.. but your b/fs lastname. register all your details under his. and i think it should be ok...



i dunno my advice sucks

about the vomiting... each time you fell sick, ( this is feral but it works fine and dandy) grate about a teaspoon and a half of ginger, put it in a cup and pour in some hot water and drink it. it calms down your stomach.