Hmmm, I am usually at my horniest when I'm due... if it really bothers you can you do something like lay a towel down and keep it dark? Perhaps something like this may help you to get over your 'ick'? Maybe work at it after the first or second day, when things are not so heavy..
Oh, I really love Redlemon's shower idea!
You could add to that with candels instead of lights on, so as to not see/notice it so much. Hmmm.... I have to go now....