No you are not gay. Repressed homosexual men get married, etc. and have sex with women - but they are still gay. Your sexual orientation is defined by what turns you on. If the transvestite looked like a convincing woman then it was the femininity that turned you on.
In general the men who have sex with transvestities are straight. I am gay and I wouldn't want to have sex with someone who looked like a woman.
one other thing.... I think it is very unethical for someone to take advantage of a drunk person. It was also unethical of that transvestite not to tell you before you started having sex that she/he was a transvestite - unless of course she/he assumed that you realised this.
LOL@Fabio. A few years ago during a trip to West Hollywood, I worked out at 24 hour fitness. And who happened to be on the damn bike beside me? Fabio himself.
This was not too long after the tragic accident in which a bird flew into his face on a rollercoaster ride, turning him into something that looked worse than the elephant man or that kid with the same disorder in the Cher movie.
Fabio deigned to say hey to me so I said hey back and told him how sorry I was to have heard about his terrible, terrible accident. He sniffed and said thanks.