Am I obliged to have intercourse with my husband?

HELL NO!!!!!!!! Intercourse should be an act of love, not an act of submission or necessity. If you feel that sex is a chore, then SOMEONE should make the call and find out what is wrong and why you feel this way. I know that sex between my wife and I, although I am permitted to only do it as a lesbian would, is fantastic. It should never be a chore, sweetie. You have to be happy. I'll say it again. YOU HAVE TO BE HAPPY!!!!!!!!