I hear you icky. . .I know how you feel. Abnormal Sexuality almost did me in. Talk to your prof. . .tell her how you feel and see if she can work it out so that you can be there if you want to, but maybe let you sit near the door so you can slip out if you need to. My experience has been that most teachers are willing to help out. . .but they have to know you need it. G'luck to you.