Amazing review, FCM!
I had an extremely similar reaction to the film when I saw it in a surprise preview last week, it's only that I resented the masculine view of female sexuality so much that it overshadowed almost everything else - it went so far that I almost hated having to sit through it. Well, I also hadn't seen the trailer in months, so I had forgotten that there were going to be horror elements in the film. This experience told me that I am doing the right thing by staying as far away as possible from the horror genre as I can - I just can't deal with stuff like that. Like you, I had a physical reaction to the film - my heartbeat was thrown seriously out of rhythm a couple of times, which did not feel good at all.
Now that a few days have passed, I can recognize the technical brilliance of the film, the dancerly camera work, Nathalie Portman's impressive dedication to the project, the subtly effective production design (great point about the grey, white and pink hues of the film, and the significance of the black top!), but overall, the fact remains that Black Swan is in my Top 3 most uncomfortable viewing experiences of the year.