SEX and the baby weirdness

I'm 29 almost 30 wks and I've been sick with a cold and we haven't had sex in 2 weeks! Tonight my hubby was desperate for it and so we started.. all was good, then after he went down on me , he went limp, he said I tasted different , then he thought about the baby and everything and his mind went crazy with his thoughts, and we..stopped. (sigh)

I'm wondering has any one else's hubby got weirded out like this.??And u "taste different"?? What does that mean? I'm a very hygiene oriented person so I'm wondering what has changed since two wks ago to now... I told him he prob can't go down on me anymore. When did all y'all stop ?