Trust me, bakc in year 11 i used to be SOO squeamish- i couldn't even dare touch hearts/livers etc. thats how scared i was. (that's hard for me to admit being male)
but this year, i just absolutely love biology, i though i'd never get over my sqeaumishness but now i love dissections. my bio teacher literally had to drag me out of the lab when we were doing a heart dissection.
when i did work experience at my local hospital, one of the doctors (not totally legally) got me into the orthopaedic operation theatre.
i had the pleasure (not) of watching 3 hip operations (distal hip screws) and one toe amputation. at first i thought i was going to faint, but after a while i was breathing down the surgeon's neck (quite literally)
you'll get over it